Research topic: blood groups

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blood groups

The Columbia Encyclopedia, Sixth Edition
blood groups differentiation of blood by type, classified according to immunological (antigenic) properties, which are determined by specific substances on the surface of red blood cells. Blood groups are genetically determined and each is characterized by the presence of a specific complex carbohydrate . About 200 different blood group substances have been identified and placed within 19 known blood group systems. The most commonly encountered blood group system is the ABO, or Landsteiner , system. Individuals may contain the A, B, or both A and B antigenic substances, or else lack these... Read more
blood group
blood group • n. any of the various types of human blood whose antigen characteristics determine compatibility in transfusion. The best known blood groups are those of the ABO system. Read more
blood group
blood group Any of the types into which blood is classified according to which antigens are present on the surface...otherwise it is Rh-negative. Such typing is essential before blood transfusion , since using blood of the wrong group may produce... Read more

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