Question

The rarest blood group is ?​

Answer 1

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$\implies$One of the rarest blood types in the world is Rhnull, sometimes referred to as 'golden blood'. People with this blood type have a complete absence of any of the Rh antigens.

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Answer 2

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AB - negative

However, in the United States, AB-negative is considered to be the rarest blood type, and O-positive the most common. The Stanford School of Medicine Blood Center ranks blood types in the United States from rarest to most common as follows: AB-negative (.6 percent)

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