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hem·ag·glu·ti·nin .hē-mə-'glüt-ən-ən also he·mo·ag·glu·ti·nin .hē-mō-ə- or chiefly Brit haem·ag·glu·ti·nin also hae·mo·ag·glu·ti·nin n an agglutinin (as an antibody or viral capsid protein) that causes hemagglutination compare LEUKOAGGLUTININ
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he·mag·glu·ti·nin (HA) (he″mə-glooґtĭ-nin) [hem- + agglutinin] an agglutinin, e.g., an antibody or lectin, that agglutinates erythrocytes.Medical dictionary. 2011.