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How many blood types are there? Which blood group is universal donor and acceptor?

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posted Apr 5, 2016 by Sumana

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Blood Types:
lthough all blood is made of the same basic elements, not all blood is alike. In fact, there are eight different common blood types, which are determined by the presence or absence of certain antigens – substances that can trigger an immune response if they are foreign to the body. Since some antigens can trigger a patient's immune system to attack the transfused blood, safe blood transfusions depend on careful blood typing and cross-matching.

There are four major blood groups determined by the presence or absence of two antigens – A and B – on the surface of red blood cells:

Group A – has only the A antigen on red cells (and B antibody in the plasma)
Group B – has only the B antigen on red cells (and A antibody in the plasma)
Group AB – has both A and B antigens on red cells (but neither A nor B antibody in the plasma)
Group O – has neither A nor B antigens on red cells (but both A and B antibody are in the plasma)
There are very specific ways in which blood types must be matched for a safe transfusion.

The universal red cell donor has Type O negative blood type.
The universal plasma donor has Type AB blood type.

The universal blood donor O blood type.
The universal Blood accepter AB blood type.

answer Apr 5, 2016 by Vrije Mani Upadhyay
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