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A 1,3-bis(phosphatidyl)glycerol found in many biomembranes with immunologic properties; used in serologic diagnosis of syphilis. When mixed with lecithin and cholesterol cardiolipin will combine with the Wassermann antibody but not with the treponema-immobilizing antibody.
heart antigenA nonspecific term for any complex (antigen) biomolecule that is present in higher concentrations in the heart than in other tissues; e.g.:
(1) Cardiolipin, see there;
(2) Myosin, see there;
(3) Troponin, see there.