MCQOPTIONS
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| 1. |
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 ststem 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 persons RBC lacks the corresponding antigen |
| Answer» E. | |