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Innate immune system

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36: 1144:) - a situation that can arise in viral infections of host cells. They were named "natural killer" because of the initial notion that they do not require activation in order to kill cells that are "missing self". The MHC makeup on the surface of damaged cells is altered and the NK cells become activated by recognizing this. Normal body cells are not recognized and attacked by NK cells because they express intact self MHC antigens. Those MHC antigens are recognized by killer cell 169: 72: 748: 919: 779:. Most leukocytes differ from other cells of the body in that they are not tightly associated with a particular organ or tissue; thus, their function is similar to that of independent, single-cell organisms. Most leukocytes are able to move freely and interact with and capture cellular debris, foreign particles, and invading microorganisms (although 1011:. Neutrophils are the most abundant type of phagocyte, normally representing 50–60% of the total circulating leukocytes, and are usually the first cells to arrive at the site of an infection. The bone marrow of a normal healthy adult produces more than 100 billion neutrophils per day, and more than 10 times that many per day during 1951:. Proteolytic cascades are important components of the invertebrate immune system because they are turned on more rapidly than other innate immune reactions because they do not rely on gene changes. Proteolytic cascades function in both vertebrate and invertebrates, even though different proteins are used throughout the cascades. 2079:. Some of these travel through the plant and signal other cells to produce defensive compounds to protect uninfected parts, e.g., leaves. Salicylic acid itself, although indispensable for expression of SAR, is not the translocated signal responsible for the systemic response. Recent evidence indicates a role for 2009:
Like invertebrates, plants neither generate antibody or T-cell responses nor possess mobile cells that detect and attack pathogens. In addition, in case of infection, parts of some plants are treated as disposable and replaceable, in ways that few animals can. Walling off or discarding a part of a
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is one of the first responses of the immune system to infection or irritation. Inflammation is stimulated by chemical factors released by injured cells. It establishes a physical barrier against the spread of infection and promotes healing of any damaged tissue following pathogen clearance.
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do not possess lymphocytes or an antibody-based humoral immune system, and it is likely that a multicomponent, adaptive immune system arose with the first vertebrates. Nevertheless, invertebrates possess mechanisms that appear to be precursors of these aspects of vertebrate immunity.
1076: 968: 945:. Macrophages are the most efficient phagocytes and can phagocytose substantial numbers of bacteria or other cells or microbes. The binding of bacterial molecules to receptors on the surface of a macrophage triggers it to engulf and destroy the bacteria through the generation of a " 914:
or by cell injury due to an infection, phagocytic cells are responsible for their removal from the affected site. By helping to remove dead cells preceding growth and development of new healthy cells, phagocytosis is an important part of the healing process following tissue injury.
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Most plant immune responses involve systemic chemical signals sent throughout a plant. Plants use PRRs to recognize conserved microbial signatures. This recognition triggers an immune response. The first plant receptors of conserved microbial signatures were identified in rice
2028:, 2000). Plants also carry immune receptors that recognize variable pathogen effectors. These include the NBS-LRR class of proteins. When a part of a plant becomes infected with a microbial or viral pathogen, in case of an incompatible interaction triggered by specific 899:. The lysosome contains enzymes and acids that kill and digest the particle or organism. In general, phagocytes patrol the body searching for pathogens, but are also able to react to a group of highly specialized molecular signals produced by other cells, called 1118:
proteins and free radicals that are highly effective in killing parasites, but may also damage tissue during an allergic reaction. Activation and release of toxins by eosinophils are, therefore, tightly regulated to prevent any inappropriate tissue destruction.
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can prevent the colonization of pathogenic bacteria by secreting toxic substances or by competing with pathogenic bacteria for nutrients or cell surface attachment sites. The flushing action of tears and saliva helps prevent infection of the eyes and mouth.
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Anatomical barriers include physical, chemical and biological barriers. The epithelial surfaces form a physical barrier that is impermeable to most infectious agents, acting as the first line of defense against invading organisms.
282:(shedding) of skin epithelium also helps remove bacteria and other infectious agents that have adhered to the epithelial surface. Lack of blood vessels, the inability of the epidermis to retain moisture, and the presence of 510:, like cytokines and chemokines, which are responsible for the clinical signs of inflammation. PRR activation and its cellular consequences have been well-characterized as methods of inflammatory cell death, which include 840:
Mast cells are a type of innate immune cell that resides in connective tissue and in mucous membranes. They are intimately associated with wound healing and defense against pathogens, but are also often associated with
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of the immune system that helps, or "complements", the ability of antibodies to clear pathogens or mark them for destruction by other cells. The cascade is composed of many plasma proteins, synthesized in the
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Members of every class of pathogen that infect humans also infect plants. Although the exact pathogenic species vary with the infected species, bacteria, fungi, viruses, nematodes, and insects can all cause
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Arai S, Meagher R, Swearingen M, Myint H, Rich E, Martinson J, Klingemann H (2008). "Infusion of the allogeneic cell line NK-92 in patients with advanced renal cell cancer or melanoma: a phase I trial".
1810:, thus inhibiting type I IFN production. Influenza A also blocks protein kinase R activation and establishment of the antiviral state. The dengue virus also inhibits type I IFN production by blocking 1775:, which are translocated in the nucleus, where they induce IFN production with the presence of a particular transcription factor and activate transcription factor 2. IFN is secreted through secretory 2395:
Monga I, Kaur K, Dhanda S (March 2022). "Revisiting hematopoiesis: applications of the bulk and single-cell transcriptomics dissecting transcriptional heterogeneity in hematopoietic stem cells".
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of the host's own DNA marks it as "self" and prevents it from being attacked by endonucleases. Restriction endonucleases and the restriction modification system exist exclusively in prokaryotes.
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vessels and entering the areas between cells in pursuit of invading pathogens. In tissues, organ-specific macrophages are differentiated from phagocytic cells present in the blood called
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cells or virus-infected cells, recognizing such cells by a condition known as "missing self". This term describes cells with abnormally low levels of a cell-surface marker called MHC I (
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from blood cells and mobile plasma proteins make up the clotting system, where the transglutaminase polymerizes 210 kDa subunits of a plasma-clotting protein. On the other hand, in the
1963:, a gel-like fluid surrounds pathogen invaders, similar to the way blood does in other animals. Various proteins and mechanisms are involved in invertebrate clotting. In crustaceans, 1881:(PRRs) are proteins used by nearly all organisms to identify molecules associated with microbial pathogens. TLRs are a major class of pattern recognition receptor, that exists in all 991:. Neutrophil granules contain a variety of toxic substances that kill or inhibit growth of bacteria and fungi. Similar to macrophages, neutrophils attack pathogens by activating a 557:, and attract phagocytes, especially neutrophils. Neutrophils then trigger other parts of the immune system by releasing factors that summon additional leukocytes and lymphocytes. 1669:. They inhibit phagocytosis by affecting the phagocytes receptors used to engulf bacteria. They may also mimic host cells so the immune system does not recognize them as foreign. 2558:
Gong JH, Maki G, Klingemann HG (April 1994). "Characterization of a human cell line (NK-92) with phenotypical and functional characteristics of activated natural killer cells".
891:, wrapping the membrane around the particle until it is enveloped (i.e., the particle is now inside the cell). Once inside the cell, the invading pathogen is contained inside a 937:
Macrophages, from the Greek, meaning "large eaters", are large phagocytic leukocytes, which are able to move beyond the vascular system by migrating through the walls of
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clotting system, components of proteolytic cascades are stored as inactive forms in granules of hemocytes, which are released when foreign molecules, like
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Tonn T, Becker S, Esser R, Schwabe D, Seifried E (August 2001). "Cellular immunotherapy of malignancies using the clonal natural killer cell line NK-92".
2036:(HR), in which cells at the site of infection undergo rapid apoptosis to prevent spread to other parts of the plant. HR has some similarities to animal 3550: 2067:(SAR) is a type of defensive response that renders the entire plant resistant to a broad spectrum of infectious agents. SAR involves the production of 791:
are less mobile). Unlike many other cells, most innate immune leukocytes cannot divide or reproduce on their own, but are the products of multipotent
1178:, γδ T cells exhibit characteristics that place them at the border between innate and adaptive immunity. γδ T cells may be considered a component of 1998:
responses that lead to the formation of defensive chemical compounds that fight infection or make the plant less attractive to insects and other
506:(PAMPs). At the onset of an infection, burn, or other injuries, these cells undergo activation (one of their PRRs recognizes a PAMP) and release 3306:"Inhibition of the type I interferon response in human dendritic cells by dengue virus infection requires a catalytically active NS2B3 complex" 1210:
overlaps with the immune system. Some products of the coagulation system can contribute to non-specific defenses via their ability to increase
1740:(dsRNA), MDA5 and RIG-I receptors are located in the cytoplasm and recognize long dsRNA and phosphate-containing dsRNA respectively. When the 3505:
Cerenius L, Kawabata S, Lee BL, Nonaka M, Söderhäll K (October 2010). "Proteolytic cascades and their involvement in invertebrate immunity".
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Innate immune system cells prevent free growth of microorganisms within the body, but many pathogens have evolved mechanisms to evade it.
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The innate immune response to infectious and sterile injury is modulated by neural circuits that control cytokine production period. The
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act as a physical and chemical barrier to infectious agents; via physical measures such as skin and mucus, and chemical measures such as
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Phagocytosis of the hosts' own cells is common as part of regular tissue development and maintenance. When host cells die, either by
2045: 742: 136: 826:, and dendritic cells, and function within the immune system by identifying and eliminating pathogens that might cause infection. 4057: 2880: 2436: 1190:. The various subsets may be considered part of the innate immune system where a restricted TCR or NK receptors may be used as a 108: 2186: 3931: 3896: 2015: 561:
produced by macrophages and other cells of the innate immune system mediate the inflammatory response. These cytokines include
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component of the innate immune response found among all classes of life and represent the main form of invertebrate systemic
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Dendritic cells (DCs) are phagocytic cells present in tissues that are in contact with the external environment, mainly the
522:. These cell death pathways help clear infected or aberrant cells and release cellular contents and inflammatory mediators. 115: 4009: 2068: 1943:
cascades that degrade proteins and control many of the mechanisms of the innate immune system of invertebrates—including
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due to the presence of granules in their cytoplasm, or as polymorphonuclear cells (PMNs) due to their distinctive lobed
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Lotze MT, Tracey KJ (April 2005). "High-mobility group box 1 protein (HMGB1): nuclear weapon in the immune arsenal".
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protein, which can bind to host and viral RNA, interact with immune signaling proteins or block their activation by
953:. Pathogens also stimulate the macrophage to produce chemokines, which summon other cells to the site of infection. 1783:) or nearby cells (paracrine). This induces hundreds of interferon-stimulated genes to be expressed. This leads to 1198:
produced by microbes, and highly restricted intraepithelial Vδ1 T cells will respond to stressed epithelial cells.
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Kobayashi H (2005). "Airway biofilms: implications for pathogenesis and therapy of respiratory tract infections".
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image of normal circulating human blood. One can see red blood cells, several knobby white blood cells including
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Rodriguez-Madoz JR, Belicha-Villanueva A, Bernal-Rubio D, Ashour J, Ayllon J, Fernandez-Sesma A (October 2010).
192:. The innate immune system is an alternate defense strategy and is the dominant immune system response found in 2446: 93: 1136:(NK cells) do not directly attack invading microbes. Rather, NK cells destroy compromised host cells, such as 586:
heat, either increased local temperature, such as a warm feeling around a localized infection, or a systemic
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recruit immune cells to infection sites by producing chemical factors, including chemical mediators called
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Breuer K, Foroushani AK, Laird MR, Chen C, Sribnaia A, Lo R, Winsor GL, Hancock RE, Brinkman FS, Lynn DJ.
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is induced. Both pathways converge in the recruitment and activation of the IKKε/TBK-1 complex, inducing
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The process of acute inflammation is initiated by cells already present in all tissues, mainly resident
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Basophils and eosinophils are cells related to the neutrophil. When activated by a pathogen encounter,
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Le Bon A, Tough DF (August 2002). "Links between innate and adaptive immunity via type I interferon".
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Some viruses evade this by producing molecules that interfere with IFN production. For example, the
1194:. For example, according to this paradigm, large numbers of Vγ9/Vδ2 T cells respond within hours to 4655: 4523: 2585:
Klingemann HG (2010). "Development and testing of NK cell lines". In Lotze MT, Thompson AW (eds.).
2127: 2059:, are widely present in plants and detect pathogens. These proteins contain domains similar to the 1854: 1708: 3263:
García-Sastre A, Egorov A, Matassov D, Brandt S, Levy DE, Durbin JE, et al. (December 1998).
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mechanisms are important in the plant systemic response, as they can block virus replication. The
129: 4625: 4544: 4413: 3949: 2033: 1662: 950: 887:', pathogens or particles. To engulf a particle or pathogen, a phagocyte extends portions of its 792: 424: 82: 4650: 2107: 1904: 1702: 1683: 1635:, or wearing a protective capsule, which prevents lysis by complement and by phagocytes, as in 1392: 1239: 1179: 1093: 1069: 507: 338: 251: 185: 869:, causing the characteristic signs of inflammation, and recruits neutrophils and macrophages. 3354: 1803: 1671: 1601: 1550: 1289:
that inhibits cytokine release by interacting with alpha7 nicotinic acetylcholine receptors (
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The word 'phagocyte' literally means 'eating cell'. These are immune cells that engulf, or '
294:, movement due to peristalsis or cilia, respectively, helps remove infectious agents. Also, 4620: 3825: 3728: 3632: 3577: 3433: 2117: 1765: 1195: 1133: 1089: 1065: 803: 598: 390: 265: 255: 3799: 8: 4408: 4383: 3982: 3959: 3717:"VPEgamma exhibits a caspase-like activity that contributes to defense against pathogens" 2312:. Computing Centre, Slovak Academy of Sciences: Academic Electronic Press. Archived from 1972: 1780: 1648: 1513: 1294: 1270: 1243: 1183: 1161: 1128: 1004: 650: 380: 3829: 3732: 3715:
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3636: 3581: 3437: 3167:"Induction of type I interferon by RNA viruses: cellular receptors and their substrates" 711:
Elements of the complement cascade can be found in many non-mammalian species including
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Please help update this article to reflect recent events or newly available information.
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The parts of the innate immune system display specificity for different pathogens.
1286: 815: 609: 492:. These cells present receptors contained on the surface or within the cell, named 445: 355: 245: 3589: 3566:"A receptor kinase-like protein encoded by the rice disease resistance gene, Xa21" 3564:
Song WY, Wang GL, Chen LL, Kim HS, Pi LY, Holsten T, et al. (December 1995).
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The three different complement systems are classical, alternative and lectin.
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identify and remove foreign substances present in organs, tissues, blood and
3644: 3620: 3565: 2832:"NK cells use perforin rather than granulysin for anticryptococcal activity" 4615: 4549: 4518: 4378: 4243: 4135: 4098: 4081: 3845: 3750: 3701: 3652: 3526: 3488: 3407: 3339: 3281: 3264: 3249: 3200: 3143: 3099: 3056: 2937: 2857: 2830:
Ma LL, Wang CL, Neely GG, Epelman S, Krensky AM, Mody CH (September 2004).
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is stimulated in leaves damaged by insects, and involves the production of
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inhibit bacterial growth by binding iron, an essential bacterial nutrient.
1247: 1222:. In addition, some of the products of the coagulation system are directly 1008: 988: 884: 866: 724: 554: 550: 465: 460: 347: 327: 279: 205: 3597: 3453: 3290: 3216:"Ubiquitin in the activation and attenuation of innate antiviral immunity" 2994: 2816: 2571: 1889:
exists in most life forms. Some invertebrates, including various insects,
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is a prototypical neural circuit that controls cytokine production in the
4292: 4175: 4037: 3389: 3321: 3231: 2020: 1940: 1862: 1838: 1799: 1779:, where it can activate receptors on both the cell it was released from ( 1753: 1741: 1657: 1643: 1594: 1415: 1278: 1258: 1254: 1231: 1227: 984: 976: 962: 932: 904: 846: 823: 819: 807: 796: 659: 620: 594: 538: 515: 481: 473: 401: 361: 343: 3837: 3467:
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In the hemolymph, which makes up the fluid in the circulatory system of
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inhibits the ability of the phagocyte to respond to chemokine signals.
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Beck G, Habicht GS (November 1996). "Immunity and the invertebrates".
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The inflammatory response is characterized by the following symptoms:
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in the dermis, produces an environment unsuitable for the survival of
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but distinguishable from host molecules, collectively referred to as
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Alberts B, Johnson A, Lewis J, Raff M, Roberts K, Walters P (2002).
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are located in the endosomal membrane and recognize double-stranded
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cell line does not express KIR and is developed for tumor therapy.
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swelling of affected tissues, such as the upper throat during the
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utilize a modified form of the complement response known as the
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form holes in the plasma membrane of the pathogen, resulting in
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is one of the two main immunity strategies (the other being the
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Agrawal P, Nawadkar R, Ojha H, Kumar J, Sahu A (16 June 2017).
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in transmission of the signal to distal portions of the plant.
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increased production of mucus, which can cause symptoms like a
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Natural killer cells - Basic Science and Clinical applications
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Like other 'unconventional' T cell subsets bearing invariant
1149: 1137: 1115: 918: 712: 655: 587: 566: 498:(PRRs), which recognize molecules that are broadly shared by 384: 295: 241: 197: 193: 3876:
database of proteins and their interactions in innate immune
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Linden JC, Stoner RJ, Knutson KW, Gardner-Hughes CA (2000).
3621:"Plant and animal sensors of conserved microbial signatures" 3997: 3992: 3871: 2025: 1894: 1890: 1841:
organisms), utilize a unique defense mechanism, called the
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bacteria, making up a substantial portion of the mammalian
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One strategy is intracellular replication, as practised by
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Croize J, Arvieux J, Berche P, Colomb MG (December 1993).
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Baulcombe D (September 2004). "RNA silencing in plants".
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Immunology Section of Microbiology and Immunology On-line
2181: 1858: 1737: 1114:. Upon activation, eosinophils secrete a range of highly 562: 2729: 2191:(Fifth ed.). New York and London: Garland Science. 1857:, that attack and destroy specific regions of the viral 1148:
receptors (KIR) that slow the reaction of NK cells. The
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The major functions of the innate immune system are to:
2732:"Complement Evasion Strategies of Viruses: An Overview" 2434: 2370:
Janeway CA, Travers P, Walport M, Shlomchik MJ (2005).
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rid the body of neutralised antigen-antibody complexes.
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Access Excellence Classic Collection Background Paper
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utilize mechanisms that directly kill the phagocyte.
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to produce junctional diversity and develop a memory
3371: 3115: 2961:"Common themes in microbial pathogenicity revisited" 2185:, Paul C, Travers M, Walport M, Shlomchik M (2001). 1885:(animals with a body-cavity), including humans. The 2691: 2147:"Immune response: MedlinePlus Medical Encyclopedia" 2052:that regulates cell disassembly during cell death. 96:. Unsourced material may be challenged and removed. 4079: 2829: 2709:. Lippincott Williams & Wilkins. p. 172. 2557: 669:"tag" pathogens for destruction by other cells by 3673: 3164: 2525:Journal of Hematotherapy & Stem Cell Research 1791:, which inhibits viral protein synthesis, or the 693:Classical: starts when antibody binds to bacteria 4642: 3116:Akira S, Uematsu S, Takeuchi O (February 2006). 630:possible dysfunction of involved organs/tissues. 3563: 3500: 3498: 3213: 2394: 1752:recognize a virus the conformation between the 1060:, but dendritic cells are not connected to the 525:Chemical factors produced during inflammation ( 2909: 1845:to protect themselves from pathogens, such as 1201: 4065: 3904: 3618: 3466: 3214:Heaton SM, Borg NA, Dixit VM (January 2016). 1985:Plant disease resistance § Immune system 1068:, and serve as a link between the innate and 666:trigger the recruitment of inflammatory cells 583:, due to locally increased blood circulation; 3495: 2958: 2304:Stvrtinová V, Jakubovský J, Hulín I (1995). 2270:Saunders Comprehensive Veterinary Dictionary 1083: 857:, along with various hormonal mediators and 3772:Chitosan#Agricultural and horticultural use 3423: 3077: 2551: 2326: 775:White blood cells (WBCs) are also known as 233:, activate cells, and promote clearance of 4072: 4058: 3911: 3897: 3118:"Pathogen recognition and innate immunity" 2965:Microbiology and Molecular Biology Reviews 2584: 1053:. They are named for their resemblance to 330:, desquamation, flushing, organic acids, 3815: 3740: 3691: 3544: 3397: 3372:Oliveira PH, Touchon M, Rocha EP (2014). 3329: 3297: 3280: 3239: 3190: 3133: 3034: 2984: 2927: 2847: 2806: 2757: 2747: 2674: 2625: 2430: 2428: 2426: 2177: 2175: 2173: 2171: 2169: 2167: 1230:, a protein produced by platelets during 675:, or coating, the surface of the pathogen 156:Learn how and when to remove this message 3540: 3538: 3536: 3111: 3109: 3011:Dorland's Illustrated Medical Dictionary 2455: 2363: 2241: 2239: 2237: 2235: 2233: 2231: 2229: 1919:produce antimicrobial peptides known as 1277:. Action potentials transmitted via the 1250:are involved in the coagulation system. 1242:by acting as a cationic detergent. Many 1074: 966: 917: 865:into the environment. Histamine dilates 746: 167: 4579:Megakaryocyte–erythroid progenitor cell 3419: 3417: 3007: 3001: 2910:Finlay BB, McFadden G (February 2006). 2872: 2461: 2299: 2297: 2295: 2293: 2291: 2289: 2287: 2227: 2225: 2223: 2221: 2219: 2217: 2215: 2213: 2211: 2209: 1934: 1304: 1122: 1037:), and the inner mucosal lining of the 682:of the pathogen cell, causing its death 623:, or affecting the whole body, such as 209: 14: 4643: 3619:Ronald PC, Beutler B (November 2010). 3256: 2903: 2648: 2599: 2423: 2310:Pathophysiology: Principles of Disease 2164: 2055:"Resistance" (R) proteins, encoded by 1954: 504:pathogen-associated molecular patterns 272: 4053: 3892: 3674:Gómez-Gómez L, Boller T (June 2000). 3533: 3106: 3071: 2606:The Journal of Clinical Investigation 1824: 1299:cholinergic anti-inflammatory pathway 1281:to the spleen mediate the release of 3460: 3414: 3220:The Journal of Experimental Medicine 3165:Baum A, García-Sastre A (May 2010). 3158: 2704: 2388: 2284: 2206: 1696:Bacteria and fungi may form complex 1264: 730: 634: 94:adding citations to reliable sources 65: 29: 3785:"Organic disease control elicitors" 2878: 2272:(3rd ed.). Elsevier, Inc. 2007 2010:plant helps stop infection spread. 1849:. In this system, bacteria produce 696:Alternative: starts "spontaneously" 24: 3352: 3037:Treatments in Respiratory Medicine 1795:family, which degrades viral RNA. 1018: 27:Immunity strategy in living beings 25: 4667: 3863: 3446:10.1038/scientificamerican1196-60 2959:Finlay BB, Falkow S (June 1997). 2466:(6th ed.). Garland Science. 2374:(6th ed.). Garland Science. 2245: 2032:, the plant produces a localized 1621: 743:Cells of the innate immune system 662:. The proteins work together to: 615:pain, either local pain, such as 3049:10.2165/00151829-200504040-00003 3014:(30th ed.). W.B. Saunders. 2799:10.1128/iai.61.12.5134-5139.1993 2397:Briefings in Functional Genomics 2248:"Innate (Non-Specific) Immunity" 2044:-1-like proteolytic activity of 1868: 1142:major histocompatibility complex 764: 760: 70: 34: 3809: 3776: 3765: 3708: 3667: 3612: 3557: 3365: 3346: 3207: 3028: 2952: 2823: 2774: 2723: 2642: 2593: 2578: 2516: 2480: 2254:. University of South Carolina. 2004:plant defense against herbivory 1939:In invertebrates, PRRs trigger 1843:restriction modification system 1793:2′,5′-oligoadenylate synthetase 802:The innate leukocytes include: 454: 305: 81:needs additional citations for 3883:Innate Immune System Animation 3507:Trends in Biochemical Sciences 2977:10.1128/mmbr.61.2.136-169.1997 2320: 2258: 2139: 1829: 1338:Intracellular and cytoplasmic 956: 926: 312:Additional defense mechanisms 290:. In the gastrointestinal and 13: 1: 3924:Pattern recognition receptors 3693:10.1016/S1097-2765(00)80265-8 3590:10.1126/science.270.5243.1804 3481:10.1016/S0962-8924(01)02004-9 3092:10.1016/s0952-7915(02)00354-0 3080:Current Opinion in Immunology 2438:Molecular Biology of the Cell 2133: 1879:Pattern recognition receptors 1712:infections characteristic of 1155: 1033:(where they are often called 872: 829: 495:pattern recognition receptors 4270:Extramedullary hematopoiesis 2881:"Immune Evasion by bacteria" 2651:"Reflex control of immunity" 2065:Systemic acquired resistance 1861:of invading bacteriophages. 1787:protein production, such as 1665:, causing infections of the 1192:pattern recognition receptor 767:, and many small disc-shape 753:scanning electron microscope 7: 2849:10.4049/jimmunol.173.5.3357 2600:Tracey KJ (February 2007). 2101: 2040:, such as a requirement of 1202:Other vertebrate mechanisms 10: 4672: 3885:XVIVO Scientific Animation 3798:(5): 32–34. Archived from 3792:Agro Food Industry Hi-Tech 3519:10.1016/j.tibs.2010.04.006 3135:10.1016/j.cell.2006.02.015 2929:10.1016/j.cell.2006.01.034 2655:Nature Reviews. Immunology 2329:Nature Reviews. Immunology 1982: 1754:caspase-recruitment domain 1728:(IFN), secreted mainly by 1719: 1632:Mycobacterium tuberculosis 1159: 1126: 1087: 1022: 960: 949:", causing the release of 930: 876: 833: 740: 734: 638: 458: 4603: 4563: 4537: 4509: 4476: 4436:Antigen-presenting cells 4429: 4364: 4355: 4291: 4282: 4262: 4224: 4199: 4190: 4161: 4121: 4112: 4088: 4026: 4008: 3968: 3930: 3742:10.1016/j.cub.2004.09.056 3183:10.1007/s00726-009-0374-0 2736:Frontiers in Microbiology 2537:10.1089/15258160152509145 2502:10.1080/14653240802301872 1978: 1855:restriction endonucleases 1380: 1084:Basophils and eosinophils 440:& active selection). 298:traps infectious agents. 182:nonspecific immune system 43:This article needs to be 4524:Nucleated red blood cell 4080:Myeloid blood cells and 3547:"Plant immune responses" 3008:Dorland WA, ed. (2003). 2749:10.3389/fmicb.2017.01117 2306:"Inflammation and Fever" 2128:Endothelial cell tropism 1709:Burkholderia cenocepacia 975:Neutrophils, along with 793:hematopoietic stem cells 4626:Hematopoietic stem cell 4545:Leukocyte extravasation 4414:Foreign-body giant cell 3950:Formyl peptide receptor 3645:10.1126/science.1189468 2649:Tracey KJ (June 2009). 2266:"Mucociliary escalator" 2034:hypersensitive response 1663:opportunistic pathogens 1070:adaptive immune systems 951:reactive oxygen species 907:, and dendritic cells. 389:Mucociliary escalator, 3469:Trends in Cell Biology 3378:Nucleic Acids Research 3282:10.1006/viro.1998.9508 2787:Infection and Immunity 2108:Antimicrobial peptides 1907:are an evolutionarily 1905:Antimicrobial peptides 1703:Pseudomonas aeruginosa 1684:Streptococcus pyogenes 1653:gastrointestinal flora 1393:Listeria monocytogenes 1240:Gram-positive bacteria 1176:Natural Killer T cells 1094:Eosinophil granulocyte 1080: 972: 923: 895:, which merges with a 772: 723:, and some species of 597:or joints affected by 508:inflammatory mediators 339:Gastrointestinal tract 252:adaptive immune system 186:adaptive immune system 173: 105:"Innate immune system" 18:Innate immune response 3355:"Restriction Enzymes" 2836:Journal of Immunology 1915:. Several species of 1766:transcription factors 1672:Staphylococcus aureus 1647:species are normally 1551:Entamoeba histolytica 1212:vascular permeability 1078: 970: 921: 750: 446:active transportation 266:host defence peptides 171: 4621:Hematopoietic system 4409:Langhans giant cells 3920:Innate immune system 3545:Schneider D (2005). 3322:10.1128/jvi.01051-10 3232:10.1084/jem.20151531 2409:10.1093/bfgp/elac002 2118:Innate lymphoid cell 1935:Proteolytic cascades 1305:Pathogen-specificity 1253:Increased levels of 1244:acute-phase proteins 1134:Natural killer cells 1123:Natural killer cells 1090:Basophil granulocyte 1066:antigen presentation 1005:free oxygen radicals 804:natural killer cells 699:Lectin: starts when 599:rheumatoid arthritis 444:(mechanism by which 256:antigen presentation 178:innate immune system 172:Innate immune system 90:improve this article 4384:Alveolar macrophage 3983:RIG-I-like receptor 3960:Complement receptor 3932:Membrane-bound_PRRs 3838:10.1038/nature02874 3830:2004Natur.431..356B 3733:2004CBio...14.1897R 3637:2010Sci...330.1061R 3631:(6007): 1061–1064. 3582:1995Sci...270.1804S 3576:(5243): 1804–1806. 3438:1996SciAm.275e..60B 3426:Scientific American 3384:(16): 10618–10631. 3310:Journal of Virology 2589:. pp. 169–175. 2069:chemical messengers 1973:lipopolysaccharides 1955:Clotting mechanisms 1837:(and perhaps other 1734:Toll-like receptors 1521:Leishmania donovani 1514:Plasmodium malariae 1295:inflammatory reflex 1271:inflammatory reflex 1184:rearrange TCR genes 1162:gamma/delta T cells 1129:Natural killer cell 1106:and play a role in 651:biochemical cascade 581:redness of the skin 425:Blood–brain barrier 381:Respiratory airways 273:Anatomical barriers 4555:Intrinsic immunity 4419:Touton giant cells 3955:Scavenger receptor 3940:Toll-like receptor 3390:10.1093/nar/gku734 2891:on 10 October 2006 2462:Janeway C (2005). 2061:NOD Like Receptors 1825:Beyond vertebrates 1690:Bacillus anthracis 1655:. Species such as 1414:yes (specifically 1216:chemotactic agents 1208:coagulation system 1108:allergic reactions 1081: 973: 924: 773: 309:Anatomical barrier 235:antibody complexes 227:complement cascade 210:Beyond vertebrates 174: 4636: 4635: 4599: 4598: 4472: 4471: 4399:Epithelioid cells 4278: 4277: 4258: 4257: 4254: 4253: 4186: 4185: 4047: 4046: 3978:NOD-like receptor 3824:(7006): 356–363. 3727:(21): 1897–1906. 3316:(19): 9760–9774. 2793:(12): 5134–5139. 2716:978-0-7817-9543-2 2123:NOD-like receptor 2050:cysteine protease 1887:complement system 1667:peritoneal cavity 1619: 1618: 1265:Neural regulation 1180:adaptive immunity 1001:hydrogen peroxide 993:respiratory burst 947:respiratory burst 861:, or chemotactic 731:White blood cells 647:complement system 641:Complement system 635:Complement system 452: 451: 430:endothelial cells 322:Sweat (including 292:respiratory tract 246:white blood cells 244:, by specialized 166: 165: 158: 140: 64: 63: 16:(Redirected from 4663: 4570:Precursor cells 4496:Promegakaryocyte 4362: 4361: 4289: 4288: 4214:Promegakaryocyte 4197: 4196: 4119: 4118: 4110: 4109: 4095: 4094: 4074: 4067: 4060: 4051: 4050: 3970:Cytoplasmic_PRRs 3945:Mannose receptor 3913: 3906: 3899: 3890: 3889: 3878: 3858: 3857: 3813: 3807: 3806: 3804: 3789: 3780: 3774: 3769: 3763: 3762: 3744: 3712: 3706: 3705: 3695: 3686:(6): 1003–1011. 3671: 3665: 3664: 3616: 3610: 3609: 3561: 3555: 3554: 3542: 3531: 3530: 3502: 3493: 3492: 3464: 3458: 3457: 3432:(5): 60–63, 66. 3421: 3412: 3411: 3401: 3369: 3363: 3362: 3350: 3344: 3343: 3333: 3301: 3295: 3294: 3284: 3260: 3254: 3253: 3243: 3211: 3205: 3204: 3194: 3177:(5): 1283–1299. 3162: 3156: 3155: 3137: 3113: 3104: 3103: 3075: 3069: 3068: 3032: 3026: 3025: 3005: 2999: 2998: 2988: 2956: 2950: 2949: 2931: 2907: 2901: 2900: 2898: 2896: 2887:. Archived from 2876: 2870: 2869: 2851: 2842:(5): 3357–3365. 2827: 2821: 2820: 2810: 2778: 2772: 2771: 2761: 2751: 2727: 2721: 2720: 2702: 2689: 2688: 2678: 2646: 2640: 2639: 2629: 2618:10.1172/JCI30555 2597: 2591: 2590: 2582: 2576: 2575: 2555: 2549: 2548: 2520: 2514: 2513: 2484: 2478: 2477: 2459: 2453: 2452: 2432: 2421: 2420: 2392: 2386: 2385: 2367: 2361: 2360: 2324: 2318: 2317: 2316:on 18 June 2007. 2301: 2282: 2281: 2279: 2277: 2262: 2256: 2255: 2243: 2204: 2202: 2179: 2162: 2161: 2159: 2157: 2143: 2096:methyl jasmonate 1965:transglutaminase 1947:coagulation and 1901:(proPO) system. 1899:prophenoloxidase 1815:phosophorylation 1789:protein kinase R 1484:Salmonella typhi 1312: 1311: 1287:neurotransmitter 1220:phagocytic cells 1196:common molecules 1170:(TCRs), such as 1168:T cell receptors 1035:Langerhans cells 997:oxidizing agents 816:phagocytic cells 610:productive cough 356:digestive enzyme 306: 284:sebaceous glands 262:clotting factors 161: 154: 150: 147: 141: 139: 98: 74: 66: 59: 56: 50: 38: 37: 30: 21: 4671: 4670: 4666: 4665: 4664: 4662: 4661: 4660: 4656:Insect immunity 4641: 4640: 4637: 4632: 4595: 4559: 4538:Immune response 4533: 4511:Red blood cells 4505: 4468: 4445:Langerhans cell 4440:Dendritic cells 4425: 4351: 4274: 4250: 4234:Proerythroblast 4220: 4182: 4166:Monocytopoiesis 4157: 4101: 4084: 4078: 4048: 4043: 4027:Other/ungrouped 4022: 4004: 3964: 3926: 3917: 3866: 3861: 3814: 3810: 3805:on 6 July 2007. 3802: 3787: 3781: 3777: 3770: 3766: 3721:Current Biology 3713: 3709: 3672: 3668: 3617: 3613: 3562: 3558: 3553:on 9 June 2007. 3543: 3534: 3513:(10): 575–583. 3503: 3496: 3465: 3461: 3422: 3415: 3370: 3366: 3351: 3347: 3302: 3298: 3261: 3257: 3212: 3208: 3163: 3159: 3114: 3107: 3076: 3072: 3033: 3029: 3022: 3006: 3002: 2957: 2953: 2908: 2904: 2894: 2892: 2877: 2873: 2828: 2824: 2779: 2775: 2728: 2724: 2717: 2705:Doan T (2008). 2703: 2692: 2667:10.1038/nri2566 2647: 2643: 2598: 2594: 2583: 2579: 2556: 2552: 2521: 2517: 2485: 2481: 2474: 2460: 2456: 2449: 2433: 2424: 2393: 2389: 2382: 2368: 2364: 2341:10.1038/nri1594 2325: 2321: 2302: 2285: 2275: 2273: 2264: 2263: 2259: 2244: 2207: 2199: 2180: 2165: 2155: 2153: 2151:medlineplus.gov 2145: 2144: 2140: 2136: 2104: 2018:, 1995) and in 1987: 1981: 1957: 1937: 1871: 1832: 1827: 1802:virus produces 1730:dendritic cells 1722: 1714:cystic fibrosis 1678:M. tuberculosis 1624: 1558:Giardia lamblia 1307: 1267: 1226:. For example, 1204: 1164: 1158: 1131: 1125: 1096: 1088:Main articles: 1086: 1027: 1021: 1019:Dendritic cells 983:, are known as 965: 959: 935: 929: 889:plasma membrane 881: 875: 838: 832: 789:dendritic cells 745: 739: 733: 658:, primarily by 643: 637: 478:dendritic cells 463: 457: 406:Mucus, saliva, 359: 275: 162: 151: 145: 142: 99: 97: 87: 75: 60: 54: 51: 48: 39: 35: 28: 23: 22: 15: 12: 11: 5: 4669: 4659: 4658: 4653: 4634: 4633: 4631: 4630: 4629: 4628: 4618: 4613: 4607: 4605: 4601: 4600: 4597: 4596: 4594: 4593: 4588: 4587: 4586: 4581: 4576: 4567: 4565: 4561: 4560: 4558: 4557: 4552: 4547: 4541: 4539: 4535: 4534: 4532: 4531: 4526: 4521: 4515: 4513: 4507: 4506: 4504: 4503: 4498: 4493: 4491:Megakaryoblast 4488: 4482: 4480: 4474: 4473: 4470: 4469: 4467: 4466: 4465: 4464: 4454: 4453: 4452: 4447: 4442: 4433: 4431: 4427: 4426: 4424: 4423: 4422: 4421: 4416: 4411: 4401: 4396: 4391: 4386: 4381: 4376: 4370: 4368: 4359: 4353: 4352: 4350: 4349: 4348: 4347: 4337: 4336: 4335: 4325: 4324: 4323: 4313: 4308: 4303: 4297: 4295: 4286: 4284:Myeloid tissue 4280: 4279: 4276: 4275: 4273: 4272: 4266: 4264: 4260: 4259: 4256: 4255: 4252: 4251: 4249: 4248: 4247: 4246: 4241: 4236: 4229:Erythropoiesis 4225: 4222: 4221: 4219: 4218: 4217: 4216: 4211: 4209:Megakaryoblast 4204:Thrombopoiesis 4200: 4194: 4188: 4187: 4184: 4183: 4181: 4180: 4179: 4178: 4173: 4162: 4159: 4158: 4156: 4155: 4154: 4153: 4148: 4143: 4138: 4133: 4126:Granulopoiesis 4122: 4116: 4107: 4092: 4086: 4085: 4077: 4076: 4069: 4062: 4054: 4045: 4044: 4042: 4041: 4030: 4028: 4024: 4023: 4021: 4020: 4014: 4012: 4006: 4005: 4003: 4002: 4001: 4000: 3995: 3990: 3980: 3974: 3972: 3966: 3965: 3963: 3962: 3957: 3952: 3947: 3942: 3936: 3934: 3928: 3927: 3916: 3915: 3908: 3901: 3893: 3887: 3886: 3880: 3865: 3864:External links 3862: 3860: 3859: 3808: 3775: 3764: 3707: 3680:Molecular Cell 3666: 3611: 3556: 3532: 3494: 3475:(7): 304–311. 3459: 3413: 3364: 3345: 3296: 3275:(2): 324–330. 3255: 3206: 3157: 3128:(4): 783–801. 3105: 3086:(4): 432–436. 3070: 3043:(4): 241–253. 3027: 3020: 3000: 2971:(2): 136–169. 2951: 2922:(4): 767–782. 2902: 2871: 2822: 2773: 2722: 2715: 2690: 2661:(6): 418–428. 2641: 2612:(2): 289–296. 2592: 2577: 2566:(4): 652–658. 2550: 2531:(4): 535–544. 2515: 2496:(6): 625–632. 2479: 2472: 2454: 2447: 2422: 2403:(3): 159–176. 2387: 2380: 2362: 2335:(4): 331–342. 2319: 2283: 2257: 2205: 2197: 2163: 2137: 2135: 2132: 2131: 2130: 2125: 2120: 2115: 2110: 2103: 2100: 2073:salicylic acid 1983:Main article: 1980: 1977: 1969:horseshoe crab 1956: 1953: 1936: 1933: 1870: 1867: 1847:bacteriophages 1831: 1828: 1826: 1823: 1808:ubiquitination 1721: 1718: 1623: 1622:Immune evasion 1620: 1617: 1616: 1613: 1610: 1607: 1606: 1605: 1598: 1591: 1582: 1576:Extracellular 1573: 1572: 1569: 1566: 1563: 1562: 1561: 1554: 1545: 1539:Extracellular 1536: 1535: 1532: 1529: 1526: 1525: 1524: 1517: 1508: 1502:Intracellular 1499: 1498: 1495: 1492: 1489: 1488: 1487: 1480: 1473: 1466: 1463:Staphylococcus 1457: 1451:Extracellular 1448: 1447: 1444: 1441: 1438: 1437: 1436: 1426: 1425: 1422: 1419: 1412: 1411: 1410: 1403: 1396: 1387: 1381:Intracellular 1378: 1377: 1374: 1371: 1368: 1367: 1366: 1361: 1356: 1351: 1344: 1335: 1334: 1329: 1324: 1319: 1316: 1306: 1303: 1297:is termed the 1266: 1263: 1203: 1200: 1160:Main article: 1157: 1154: 1146:immunoglobulin 1127:Main article: 1124: 1121: 1085: 1082: 1062:nervous system 1025:Dendritic cell 1023:Main article: 1020: 1017: 1015:inflammation. 961:Main article: 958: 955: 931:Main article: 928: 925: 877:Main article: 874: 871: 834:Main article: 831: 828: 806:, mast cells, 735:Main article: 732: 729: 709: 708: 697: 694: 687: 686: 683: 676: 667: 639:Main article: 636: 633: 632: 631: 628: 617:painful joints 613: 602: 591: 584: 549:, cause local 547:pain receptors 543:prostaglandins 459:Main article: 456: 453: 450: 449: 442:P-glycoprotein 427: 421: 420: 417: 411: 410: 404: 398: 397: 387: 377: 376: 341: 335: 334: 320: 314: 313: 310: 274: 271: 270: 269: 258: 248: 238: 223: 164: 163: 78: 76: 69: 62: 61: 42: 40: 33: 26: 9: 6: 4: 3: 2: 4668: 4657: 4654: 4652: 4651:Immune system 4649: 4648: 4646: 4639: 4627: 4624: 4623: 4622: 4619: 4617: 4614: 4612: 4609: 4608: 4606: 4602: 4592: 4591:Myelomonocyte 4589: 4585: 4582: 4580: 4577: 4575: 4572: 4571: 4569: 4568: 4566: 4562: 4556: 4553: 4551: 4548: 4546: 4543: 4542: 4540: 4536: 4530: 4527: 4525: 4522: 4520: 4517: 4516: 4514: 4512: 4508: 4502: 4501:Megakaryocyte 4499: 4497: 4494: 4492: 4489: 4487: 4484: 4483: 4481: 4479: 4475: 4463: 4460: 4459: 4458: 4455: 4451: 4448: 4446: 4443: 4441: 4438: 4437: 4435: 4434: 4432: 4428: 4420: 4417: 4415: 4412: 4410: 4407: 4406: 4405: 4402: 4400: 4397: 4395: 4392: 4390: 4387: 4385: 4382: 4380: 4379:Kupffer cells 4377: 4375: 4372: 4371: 4369: 4367: 4363: 4360: 4358: 4354: 4346: 4343: 4342: 4341: 4338: 4334: 4331: 4330: 4329: 4326: 4322: 4319: 4318: 4317: 4314: 4312: 4309: 4307: 4304: 4302: 4299: 4298: 4296: 4294: 4290: 4287: 4285: 4281: 4271: 4268: 4267: 4265: 4261: 4245: 4242: 4240: 4237: 4235: 4232: 4231: 4230: 4227: 4226: 4223: 4215: 4212: 4210: 4207: 4206: 4205: 4202: 4201: 4198: 4195: 4193: 4189: 4177: 4174: 4172: 4169: 4168: 4167: 4164: 4163: 4160: 4152: 4149: 4147: 4146:Metamyelocyte 4144: 4142: 4139: 4137: 4134: 4132: 4129: 4128: 4127: 4124: 4123: 4120: 4117: 4115: 4111: 4108: 4105: 4100: 4096: 4093: 4091: 4090:Hematopoiesis 4087: 4083: 4075: 4070: 4068: 4063: 4061: 4056: 4055: 4052: 4039: 4035: 4034:Immunophilins 4032: 4031: 4029: 4025: 4019: 4016: 4015: 4013: 4011: 4010:Secreted_PRRs 4007: 3999: 3996: 3994: 3991: 3989: 3986: 3985: 3984: 3981: 3979: 3976: 3975: 3973: 3971: 3967: 3961: 3958: 3956: 3953: 3951: 3948: 3946: 3943: 3941: 3938: 3937: 3935: 3933: 3929: 3925: 3921: 3914: 3909: 3907: 3902: 3900: 3895: 3894: 3891: 3884: 3881: 3877: 3873: 3868: 3867: 3855: 3851: 3847: 3843: 3839: 3835: 3831: 3827: 3823: 3819: 3812: 3801: 3797: 3793: 3786: 3779: 3773: 3768: 3760: 3756: 3752: 3748: 3743: 3738: 3734: 3730: 3726: 3722: 3718: 3711: 3703: 3699: 3694: 3689: 3685: 3681: 3677: 3670: 3662: 3658: 3654: 3650: 3646: 3642: 3638: 3634: 3630: 3626: 3622: 3615: 3607: 3603: 3599: 3595: 3591: 3587: 3583: 3579: 3575: 3571: 3567: 3560: 3552: 3548: 3541: 3539: 3537: 3528: 3524: 3520: 3516: 3512: 3508: 3501: 3499: 3490: 3486: 3482: 3478: 3474: 3470: 3463: 3455: 3451: 3447: 3443: 3439: 3435: 3431: 3427: 3420: 3418: 3409: 3405: 3400: 3395: 3391: 3387: 3383: 3379: 3375: 3368: 3360: 3356: 3349: 3341: 3337: 3332: 3327: 3323: 3319: 3315: 3311: 3307: 3300: 3292: 3288: 3283: 3278: 3274: 3270: 3266: 3259: 3251: 3247: 3242: 3237: 3233: 3229: 3225: 3221: 3217: 3210: 3202: 3198: 3193: 3188: 3184: 3180: 3176: 3172: 3168: 3161: 3153: 3149: 3145: 3141: 3136: 3131: 3127: 3123: 3119: 3112: 3110: 3101: 3097: 3093: 3089: 3085: 3081: 3074: 3066: 3062: 3058: 3054: 3050: 3046: 3042: 3038: 3031: 3023: 3021:0-7216-0146-4 3017: 3013: 3012: 3004: 2996: 2992: 2987: 2982: 2978: 2974: 2970: 2966: 2962: 2955: 2947: 2943: 2939: 2935: 2930: 2925: 2921: 2917: 2913: 2906: 2890: 2886: 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2184: 2178: 2176: 2174: 2172: 2170: 2168: 2152: 2148: 2142: 2138: 2129: 2126: 2124: 2121: 2119: 2116: 2114: 2111: 2109: 2106: 2105: 2099: 2097: 2093: 2091: 2090:jasmonic acid 2086: 2085:RNA silencing 2082: 2078: 2077:jasmonic acid 2074: 2070: 2066: 2062: 2058: 2053: 2051: 2047: 2043: 2039: 2035: 2031: 2027: 2023: 2022: 2017: 2011: 2007: 2005: 2001: 1997: 1993: 1992:plant disease 1986: 1976: 1974: 1970: 1966: 1962: 1952: 1950: 1946: 1942: 1932: 1930: 1929: 1924: 1923: 1918: 1914: 1910: 1906: 1902: 1900: 1896: 1892: 1888: 1884: 1880: 1875: 1874:Invertebrates 1869:Invertebrates 1866: 1864: 1860: 1856: 1852: 1848: 1844: 1840: 1836: 1822: 1820: 1816: 1813: 1809: 1805: 1801: 1796: 1794: 1790: 1786: 1782: 1778: 1774: 1770: 1767: 1763: 1759: 1755: 1751: 1747: 1743: 1739: 1735: 1731: 1727: 1717: 1715: 1711: 1710: 1705: 1704: 1699: 1694: 1692: 1691: 1686: 1685: 1680: 1679: 1674: 1673: 1668: 1664: 1660: 1659: 1654: 1650: 1646: 1645: 1640: 1639: 1634: 1633: 1627: 1614: 1611: 1608: 1604: 1603: 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1177: 1173: 1169: 1163: 1153: 1151: 1147: 1143: 1139: 1135: 1130: 1120: 1117: 1113: 1109: 1105: 1101: 1095: 1091: 1079:An eosinophil 1077: 1073: 1071: 1067: 1063: 1059: 1056: 1052: 1048: 1044: 1040: 1036: 1032: 1026: 1016: 1014: 1010: 1006: 1002: 998: 994: 990: 986: 982: 978: 969: 964: 954: 952: 948: 944: 940: 934: 920: 916: 913: 908: 906: 902: 898: 894: 890: 886: 880: 870: 868: 867:blood vessels 864: 860: 856: 852: 848: 844: 837: 827: 825: 821: 817: 813: 809: 805: 800: 798: 794: 790: 786: 782: 778: 770: 766: 762: 758: 754: 749: 744: 738: 728: 726: 725:invertebrates 722: 718: 714: 706: 702: 698: 695: 692: 691: 690: 684: 681: 677: 674: 673: 668: 665: 664: 663: 661: 657: 652: 648: 642: 629: 626: 622: 618: 614: 611: 607: 603: 600: 596: 592: 589: 585: 582: 579: 578: 577: 574: 572: 568: 564: 560: 556: 555:blood vessels 552: 548: 544: 540: 536: 532: 528: 523: 521: 517: 513: 509: 505: 501: 497: 496: 491: 487: 486:Kupffer cells 483: 479: 475: 470: 467: 462: 448:is mediated) 447: 443: 439: 435: 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(see: 1913:immunity 1835:Bacteria 1819:protease 1777:vesicles 1698:biofilms 1542:protozoa 1505:protozoa 1454:bacteria 1384:bacteria 1332:NK cells 1315:Pathogen 1238:of many 1055:neuronal 897:lysosome 818:include 761:monocyte 703:bind to 408:lysozyme 288:microbes 254:through 231:bacteria 4486:CFU-Meg 4333:CFU-Eos 4263:General 3854:4421274 3826:Bibcode 3759:3231431 3729:Bibcode 3633:Bibcode 3625:Science 3598:8525370 3578:Bibcode 3570:Science 3454:8875808 3434:Bibcode 3399:4176335 3331:2937777 3291:9878611 3241:4710203 3192:2860555 2995:9184008 2885:Crohnie 2817:8225590 2759:5472698 2676:4535331 2627:1783813 2572:8152260 2276:11 June 2057:R genes 2042:caspase 1975:enter. 1851:enzymes 1724:Type I 1720:Viruses 1588:Candida 1571:no/yes 1359:measles 1047:stomach 855:heparin 843:allergy 705:mannose 701:lectins 553:of the 438:osmosis 130:scholar 45:updated 4616:Plasma 4574:CFU-GM 4450:CFU-DL 4114:CFU-GM 4082:plasma 3879:system 3852:  3844:  3818:Nature 3757:  3749:  3700:  3659:  3651:  3604:  3596:  3525:  3487:  3452:  3406:  3396:  3338:  3328:  3289:  3248:  3238:  3199:  3189:  3150:  3142:  3098:  3063:  3055:  3018:  2993:  2986:232605 2983:  2944:  2936:  2864:  2856:  2815:  2808:281293 2805:  2766:  2756:  2713:  2683:  2673:  2634:  2624:  2570:  2543:  2508:  2470:  2445:  2415:  2378:  2355:  2347:  2195:  1979:Plants 1917:insect 1893:, and 1687:, and 1291:CHRNA7 1285:, the 1275:spleen 1112:asthma 1049:, and 989:nuclei 787:, and 713:plants 569:, and 541:, and 518:, and 488:, and 419:Tears 204:, and 194:plants 132:  125:  118:  111:  103:  4604:Other 4564:Other 4529:CFU-E 4430:Other 3988:RIG-I 3850:S2CID 3803:(PDF) 3788:(PDF) 3755:S2CID 3657:S2CID 3602:S2CID 3148:S2CID 3061:S2CID 2942:S2CID 2862:S2CID 2353:S2CID 1895:worms 1891:crabs 1812:IRF-3 1750:RIG-I 1579:fungi 1354:mumps 1341:virus 1236:lysis 1150:NK-92 1138:tumor 1116:toxic 1043:lungs 1013:acute 717:birds 656:liver 649:is a 627:; and 619:or a 608:or a 588:fever 567:HMGB1 385:lungs 296:mucus 242:lymph 208:(see 198:fungi 188:) in 137:JSTOR 123:books 3998:LGP2 3993:MDA5 3842:PMID 3747:PMID 3698:PMID 3649:PMID 3594:PMID 3523:PMID 3485:PMID 3450:PMID 3404:PMID 3336:PMID 3287:PMID 3246:PMID 3197:PMID 3140:PMID 3122:Cell 3096:PMID 3053:PMID 3016:ISBN 2991:PMID 2934:PMID 2916:Cell 2897:2006 2854:PMID 2813:PMID 2764:PMID 2711:ISBN 2681:PMID 2632:PMID 2568:PMID 2541:PMID 2506:PMID 2468:ISBN 2443:ISBN 2413:PMID 2376:ISBN 2345:PMID 2278:2018 2193:ISBN 2158:2021 2048:, a 2046:VPEγ 2026:FLS2 2016:XA21 1925:and 1773:IRF7 1771:and 1769:IRF3 1758:TRIF 1748:and 1746:MDA5 1706:and 1661:are 1615:yes 1534:yes 1446:yes 1443:yes 1424:yes 1376:yes 1257:and 1218:for 1206:The 1172:CD1d 1092:and 1039:nose 1031:skin 1007:and 979:and 853:and 845:and 763:, a 759:, a 721:fish 645:The 571:IL-1 415:Eyes 383:and 318:Skin 264:and 176:The 109:news 4462:MPS 4192:MEP 3834:doi 3822:431 3737:doi 3688:doi 3641:doi 3629:330 3586:doi 3574:270 3515:doi 3477:doi 3442:doi 3430:275 3394:PMC 3386:doi 3326:PMC 3318:doi 3277:doi 3273:252 3236:PMC 3228:doi 3224:213 3187:PMC 3179:doi 3130:doi 3126:124 3088:doi 3045:doi 2981:PMC 2973:doi 2924:doi 2920:124 2844:doi 2840:173 2803:PMC 2795:doi 2754:PMC 2744:doi 2671:PMC 2663:doi 2622:PMC 2614:doi 2610:117 2533:doi 2498:doi 2405:doi 2337:doi 2075:or 2006:). 1859:DNA 1804:NS1 1764:of 1738:RNA 1612:yes 1568:yes 1565:yes 1497:no 1494:yes 1491:yes 1440:no 1421:yes 1373:yes 1370:yes 1246:of 563:TNF 326:), 212:). 180:or 92:by 4647:: 3922:: 3874:. 3848:. 3840:. 3832:. 3820:. 3796:11 3794:. 3790:. 3753:. 3745:. 3735:. 3725:14 3723:. 3719:. 3696:. 3682:. 3678:. 3655:. 3647:. 3639:. 3627:. 3623:. 3600:. 3592:. 3584:. 3572:. 3568:. 3535:^ 3521:. 3511:35 3509:. 3497:^ 3483:. 3473:11 3471:. 3448:. 3440:. 3428:. 3416:^ 3402:. 3392:. 3382:42 3380:. 3376:. 3357:. 3334:. 3324:. 3314:84 3312:. 3308:. 3285:. 3271:. 3267:. 3244:. 3234:. 3222:. 3218:. 3195:. 3185:. 3175:38 3173:. 3169:. 3146:. 3138:. 3124:. 3120:. 3108:^ 3094:. 3084:14 3082:. 3059:. 3051:. 3039:. 2989:. 2979:. 2969:61 2967:. 2963:. 2940:. 2932:. 2918:. 2914:. 2883:. 2860:. 2852:. 2838:. 2834:. 2811:. 2801:. 2791:61 2789:. 2785:. 2762:. 2752:. 2738:. 2734:. 2693:^ 2679:. 2669:. 2657:. 2653:. 2630:. 2620:. 2608:. 2604:. 2562:. 2539:. 2529:10 2527:. 2504:. 2494:10 2492:. 2425:^ 2411:. 2401:21 2399:. 2351:. 2343:. 2331:. 2308:. 2286:^ 2268:. 2250:. 2208:^ 2166:^ 2149:. 2098:. 1931:. 1716:. 1681:, 1641:. 1609:no 1531:no 1528:no 1301:. 1072:. 1045:, 1041:, 1003:, 822:, 810:, 799:. 783:, 751:A 727:. 719:, 715:, 573:. 565:, 537:, 533:, 529:, 514:, 484:, 480:, 476:, 436:/ 393:, 372:, 368:, 364:, 354:, 350:, 346:, 200:, 196:, 4106:) 4102:( 4073:e 4066:t 4059:v 4040:) 4036:( 3912:e 3905:t 3898:v 3856:. 3836:: 3828:: 3761:. 3739:: 3731:: 3704:. 3690:: 3684:5 3663:. 3643:: 3635:: 3608:. 3588:: 3580:: 3529:. 3517:: 3491:. 3479:: 3456:. 3444:: 3436:: 3410:. 3388:: 3361:. 3342:. 3320:: 3293:. 3279:: 3252:. 3230:: 3203:. 3181:: 3154:. 3132:: 3102:. 3090:: 3067:. 3047:: 3041:4 3024:. 2997:. 2975:: 2948:. 2926:: 2899:. 2868:. 2846:: 2819:. 2797:: 2770:. 2746:: 2740:8 2719:. 2687:. 2665:: 2659:9 2638:. 2616:: 2574:. 2564:8 2547:. 2535:: 2512:. 2500:: 2476:. 2451:. 2419:. 2407:: 2384:. 2359:. 2339:: 2333:5 2280:. 2203:. 2201:. 2160:. 2024:( 2014:( 1418:) 771:. 612:; 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adaptive immune system
vertebrates
plants
fungi
prokaryotes
invertebrates
Beyond vertebrates
cytokines
complement cascade
bacteria
antibody complexes
lymph
white blood cells
adaptive immune system
antigen presentation
clotting factors
host defence peptides

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