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Medical Term:

heterophile antigen



  1. an antigen or antigenic determinant that is found in different tissues in more than one species.
  2. an antigen that is possessed by a variety of different phylogenetically unrelated species; the various organ- or tissue-specific antigens, the α- and β-crystalline protein of the lens of the eye, and Forssman antigen.

Synonym(s): heterogenetic antigen, heterophil antigen