by The Library of Congress
Does anyone know anything about blood transfusion?
When blood is donated it is rigorously tested for infectious diseases including HIV, hepatitis B, C etc as well as malaria. If any serious disease is found, that particular blood will not be used for transfusion, and the donor will also be notified. Next the blood is grouped as A, B, AB or O and also matched for the rhesus factor as positive or negative. Now, if a patient needs blood transfusion, his blood...
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