The cell surface antigens found chiefly, but not exclusively, on cells in the blood; many being carbohydrate moieties of membrane glycoproteins or glycolipids. More than fifteen different blood group systems are recognized in humans. Naturally occurring antibodies are found to some, even without immunization, and matching blood groups is important for safe transfusion. See ABO blood group system; Duffy; Kell; Lewis blood group; MN blood group antigens; Rhesus blood group.
http://www.ncbi.nlm.nih.gov/gv/mhc/xslcgi.cgi?cmd=bgmut/ Blood group antigen mutation database.
Subjects: Medicine and Health.