antigen determinant

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• 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

• determinant — /di terr meuh neuhnt/, n. 1. a determining agent or factor. 2. Math. an algebraic expression of the sum of products of elements, each with an appropriate algebraic sign, usually written in a square array and used in the solution of systems of… …   Universalium

• 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 — A substance inducing and reacting in an immune response. Normally antigens have molecular weights greater than about 1 kD. The antigenic determinant group is termed an epitope and the association of this with a carrier molecule (that may be part… …   Dictionary of molecular biology

• antigenic determinant — antigen′ic deter′minant n. imu epitope • Etymology: 1905–10 …   From formal English to slang

• Forssman antigen — a heterophile antigen that induces production of antisheep hemolysin, found in a variety of different animals, mainly in organs and not in erythrocytes (guinea pig, horse); sometimes it is found only in erythrocytes (sheep), and occasionally in… …   Medical dictionary

• Diego antigen system — The Diego Antigen (or Blood Group) System comprises 21 rare blood factors, any of which is carried on the band 3 protein, coded for by the gene SLC4A1 (Solute carrier family 4, Anion exchanger, member 1), located on human chromosome 17. The band… …   Wikipedia

• antigenic determinant — n EPITOPE * * * a site on the surface of an antigen molecule to which a single antibody molecule binds; generally an antigen has several or many different antigenic determinants and reacts with antibodies of many different specificities. Called… …   Medical dictionary

• antigenic determinant — The individual surface feature of an antigen, that elicits the production of a specific antibody in the course of the immune response. Each antigenic determinant, typically a few amino acids in size, causes the synthesis of a different antibody… …   Glossary of Biotechnology

• antigenic determinant — noun the site on the surface of an antigen molecule to which an antibody attaches itself • Syn: ↑determinant, ↑epitope • Topics: ↑immunology • Hypernyms: ↑site, ↑situation …   Useful english dictionary

• common antigen — an antigenic determinant group (epitope) that is present in two or more different antigen molecules and frequently leads to cross reactions among them …   Medical dictionary