ABO blood groups are the most basic system of blood typing. This system divides blood into four groups – A, B, AB and O. The other main grouping used is the Rhesus (Rh) system, which is either ...
The ABO blood group system was discovered over a hundred years ago by Karl Landsteiner, a discovery that would ultimately make modern transfusion and transplantation therapies possible. It is one mark ...
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