| epitopes | Sites on the surface of an antigen molecule to which a single antibody molecule binds. An antigen has many different epitopes and reacts with antibodies of many different specificities. (12 Dec 1998) |
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| epitopes, b-lymphocyte | Antigenic determinants recognised and bound by the B-cell receptor. Epitopes recognised by the B-cell receptor are located on the surface of the antigen. (12 Dec 1998) |
| epitopes, t-lymphocyte | Antigenic determinants recognised and bound by the T-cell receptor. Epitopes recognised by the T-cell receptor are often located in the inner, unexposed side of the antigen, and become accessible to the T-cell receptors after proteolytic processing of the antigen. (12 Dec 1998) |
| immunodominant epitopes | Subunits of the antigenic determinant that are most easily recognised by the immune system and thus most influence the specificity of the induced antibody. (12 Dec 1998) |
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