Blood types Blood and blood cells

Blood Type Testing - News-Medical blood type You belong to one of four blood types: O, A, B and AB with an additional Rh factor Canadian Blood Services provides all donors with this information blood group Blood Groups Four major blood groups: A, B, AB and O These four blood groups were originally identified by Karl Landsteiner in 1900 Your blood group is

blood type The ABO System · A type blood has only A antigens on red blood cells · B type blood has only B antigens on red blood cells · AB has both A and B