heteroantibody

Antibody that is heterologous with respect to antigen, in contradistinction to isoantibody.

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het·ero·an·ti·body -'ant-i-.bäd-ē n, pl -dies an antibody specific for a heterologous antigen

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het·ero·an·ti·body (het″ər-o-an″tĭ-bodґe) an antibody specific for antigens originating in a species other than that of the antibody producer.