best answer > What is the least common blood type in the world 2024?- QuesHub | Better Than Quora
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  • Amelia Taylor——Studied at the University of Vienna, Lives in Vienna, Austria.

    Blood Types. There are four basic types of blood--A, B, AB, and O--each with a positive and negative sub-type. O positive is the most common type, with AB negative being the least common. The letter designation of the blood type indicates which antigens are present in the blood cell.read more >>
    +119962023-04-29 13:37:32

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