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31antigen presenting cell — A cell that carries on its surface antigen bound to MCH Class I or Class II molecules, and presents the antigen in this context to T cells. Includes macrophages, endothelium, dendritic cells and Langerhans cells of the skin. See also MHC… …
32antigen-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 …
33antigen-reactive cells — 1. T lymphocytes that rapidly proliferate in response to challenge by antigen. 2. antigen sensitive c s …
34antigen-sensitive cells — small lymphocytes that when exposed to antigen can differentiate into antibody producing cells. Called also antigen reactive c s …
35antigen-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… …
36antigen-specific T-cell helper factor — a soluble factor produced by helper T cells that activates other lymphocytes that are specific for the stimulating antigen; it may itself bind antigen …
37antigen-specific T-cell suppressor factor — a soluble factor produced by suppressor T cells following immunization; it produces antigen specific suppression of the immune response and may itself bind antigen …
38antigen — UK [ˈæntɪdʒ(ə)n] / US [ˈæntɪdʒən] noun [countable] Word forms antigen : singular antigen plural antigens medical a harmful substance that causes your body to produce antibodies to fight it …
39antigen-presenting cell — noun Date: 1981 any of various cells (as a macrophage or a B cell) that take up an antigen and process it into a form recognized by and serving to activate a specific helper T cell …
40Antigen-Retrieval — Mit Antigendemaskierung, Epitop Demaskierung oder Antigen Retrieval wird in der Biochemie und Immunhistochemie das Vorgehen bezeichnet, mit der die verlorengegangene Immunreaktivität von formalinfixiertem und paraffineingebettetem Gewebe… …
