Immune agglutinin

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Immune agglutinin --> agglutinin

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.

Synonym: 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.