THE HUMAN IMMUNE SYSTEM
BLOOD GROUPS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A
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B
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A and B
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none
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Detailed explanation-1: -blood group A – has A antigens on the red blood cells with anti-B antibodies in the plasma. blood group B – has B antigens with anti-A antibodies in the plasma. blood group O – has no antigens, but both anti-A and anti-B antibodies in the plasma. blood group AB – has both A and B antigens, but no antibodies.
Detailed explanation-2: -Landsteiner isolated and named the red cell antigens “A” and “B” and the corresponding antibodies “Anti-A” and “Anti-B.” If the red cells contained neither antigen, he called these cells “O, ” representing zero antigens present.
Detailed explanation-3: -The Rh antigens are expressed as part of a protein complex in the RBC membrane. This complex is only expressed in cells of the erythroid line, and therefore Rh antigens are only expressed in RBCs.
Detailed explanation-4: -B type blood has only B antigens on red blood cells. AB has both A and B antigens on red blood cells. O has neither A nor B antigens on red blood cells.
Detailed explanation-5: -The erythrocyte antigens are situated on the membrane of the red blood cells.