Blood Type Facts - Donate Blood

Blood Types: What Letters, Positive, and Negative Signs Mean blood type Blood group, classification of blood based on inherited differences in antigens on the surfaces of the red blood cells blood link Knowledge of blood types in the different species is important as transfusion of incompatible blood (the donor animal has a different blood type from the

blood group Blood types, he claimed, “appear to have arrived at critical junctures of human development ” According to D'Adamo, type O blood arose in our