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General Medicine General 91eda14d

Although more than 400 blood groups have been identified, the ABO blood group system remains the most important in clinical medicine because -

A
It was the first blood group system to be discovered -
B
It has four different blood groups A,B, AB, O (H).
C
ABO(H) antigens are present in most body tissues and fluids
D
ABO(H) antibodies are invariably present in plasma when person's RBC lacks the corresponding antigen

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