blood group A
Blood types are inherited and represent contributions from both parents of an individual. As of 2021, a total of 43 human blood group systems are recognized by the International Society of Blood Transfusion (ISBT). The two most important blood group systems are ABO and Rh; they determine someone's blood type (A, B, AB, and O, with + or − denoting RhD status) for suitability in blood transfusion.
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For Research Use Only. Not For Clinical Use.