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complex antigen

См. также в других словарях:

  • Antigen presentation — is a process in the body s immune system by which macrophages, dendritic cells and other cell types capture antigens and then enable their recognition by T cells. NOTOC The basis of adaptive immunity lies in the capacity of immune cells to… …   Wikipedia

  • Antigen processing — is a biological process that prepares antigens for presentation to special cells of the immune system called T lymphocytes. This process involves two distinct pathways for processing of antigens from an organism s own (self) proteins or… …   Wikipedia

  • antigen-presenting cell — n any of various cells (as a macrophage or a B cell) that take up and process an antigen into a form that when displayed at the cell surface in combination with a molecule of the major histocompatibility complex is recognized by and serves to… …   Medical dictionary

  • Antigen — Each antibody binds to a specific antigen; an interaction similar to a lock and key. An antigen is a foreign molecule that, when introduced into the body, triggers the production of an antibody by the immune system. The immune system will then… …   Wikipedia

  • Antigen-presenting cell — An antigen presenting cell (APC) or accessory cell is a cell that displays foreign antigen complexed with MHC on its surface. T cells may recognize this complex using their T cell receptor (TCR). Types APCs fall into two categories: professional… …   Wikipedia

  • complex — 1. An organized constellation of feelings, thoughts, perceptions, and memories that may be in part unconscious and may strongly influence associations and attitudes. 2. In chemistry, the relatively stable combination of two or more compounds into …   Medical dictionary

  • antigen-antibody complex — (= immune complex) The product of the reaction of antigen and immunoglobulin. If the antigen is polyvalent the complex may be insoluble; see also glomerulonephritis, Arthus reaction, Type III hypersensitivity. Immune complexes activate complement …   Dictionary of molecular biology

  • antigen-antibody complex — the complex formed by the noncovalent binding of an antibody and an antigen. Complexes of antibodies belonging to certain immunoglobulin classes may activate complement. Antigen antibody complexes are mediators of Type III immune responses… …   Medical dictionary

  • antigen — Any substance that, as a result of coming in contact with appropriate cells, induces a state of sensitivity and/or immune responsiveness after a latent period (days to weeks) and that reacts in a demonstrable way with antibodies and/or immune… …   Medical dictionary

  • antigen-presenting cell — ¦ ̷ ̷  ̷ ̷  ̷ ̷  ̷ ̷ ¦ ̷ ̷  ̷ ̷ noun : any of various cells (as a macrophage or a B cell) that take up and process an antigen into a form that when displayed at the cell surface in combination with a molecule of the major histocompatibility… …   Useful english dictionary

  • antigen — noun Etymology: German, from French antigène, from anticorps antibody + gène gen Date: 1908 any substance (as an immunogen or a hapten) foreign to the body that evokes an immune response either alone or after forming a complex with a larger… …   New Collegiate Dictionary

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