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General Medicine General 7ecd4020

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 a person RBC lacks the corresponding antigen.

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