epitope

English Thesaurus

1. the site on the surface of an antigen molecule to which an antibody attaches itself (noun.substance)

hypernym	:	site, situation,
definition	:	physical position in relation to the surroundings (noun.location)

part meronym	:	antigen,
definition	:	any substance (as a toxin or enzyme) that stimulates an immune response in the body (especially the production of antibodies) (noun.substance)

domain category	:	immunology,
definition	:	the branch of medical science that studies the body's immune system (noun.cognition)