blood group antigen
Definition: generic term for any inherited antigen found on the surface of erythrocytes that determines a blood grouping reaction with specific antiserum; antigens of the ABO and Lewis blood groups may be found also in saliva and other body fluids; the genes controlling development of blood group antigens vary in frequency in different population and ethnic groups. See also Blood Groups Appendix.
Synonym(s): blood group substance
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Examples: glitazone, GI cocktail, etc.