Multiple erythrocytic antigens that comprise at least three pairs of alternates and amorphs, determined by one complex gene or possibly several genes at closely linked loci. The system is important in transfusion reactions. Its expression involves the X-chromosome.
Previous index(es): Blood Groups (1966-1975)
Semantic type(s): Body System
MeSH record created: 25/07/1975
MeSH record revised: 30/06/2005