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A small molecular region of an antigen that binds to a particular antibody or antigen receptor on a T cell; an antigenic determinant. A single antigen can have multiple epitopes.
[epi- + Greek topos, place, spot.]
(Medicine) the site on an antigen at which a specific antibody becomes attached
a site on an antigen at which an antibody can bind, the molecular arrangement of the site determining the specific combining antibody. Also called antigenic determinant .
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|Noun||1.||epitope - the site on the surface of an antigen molecule to which an antibody attaches itself|
immunology - the branch of medical science that studies the body's immune system
site, situation - physical position in relation to the surroundings; "the sites are determined by highly specific sequences of nucleotides"
antigen - any substance (as a toxin or enzyme) that stimulates an immune response in the body (especially the production of antibodies)