what is the definition of blood groups
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one of the classes (such as those designated A, B, AB, or O) into which individuals or their blood can be separated on the basis of the presence or absence of specific antigens in the blood— called also blood type
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A blood type is a classification of blood based on the presence and absence of antibodies and also based on the presence or absence of inherited antigenic substances on the surface of red blood cells.
Group A – has only the A antigen on red cells (and B antibody in the plasma)Group B – has only the B antigen on red cells (and A antibody in the plasma)Group AB – has both A and B antigens on red cells (but neither A nor B antibody in the plasma)Group O – has neither A nor B antigens on red cells (but both A and B antibody are in the plasma)
Group A – has only the A antigen on red cells (and B antibody in the plasma)Group B – has only the B antigen on red cells (and A antibody in the plasma)Group AB – has both A and B antigens on red cells (but neither A nor B antibody in the plasma)Group O – has neither A nor B antigens on red cells (but both A and B antibody are in the plasma)
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