immune agglutinin -->
medical dictionary

1. An antibody that causes clumping or agglutination of the bacteria or other cells which either stimulated the formation of the agglutinin, or contain immunologically similar, reactive antigen.

Synonyms: agglutinating antibody, immune agglutinin.

2. A substance, other than a specific agglutinating antibody, that causes organic particles to agglutinate, commonly qualified, e.g., plant agglutinin.

(05 Mar 2000)