<immunology> An isoantigen that induces agglutination of the cells to which it is attached upon exposure to its specific isoantibody. ... (05 Mar 2000) ... 
Type: Term Pronunciation: ī′sō-ă-glū-tin′ō-jen Definitions: 1. An isoantigen that induces agglutination of the cells to which it is attached upon exposure to its specific isoantibody.
[n] - an antigen capable of causing the production of (or reacting with) an isoagglutinin