Which is the rarest blood group in the world??

Dear student,.....It is a rare blood group also known as bombay phenotype because it is first observed in Bombay. In this blood group, the antigen present on the surface of RBC's is neither A or B, rather it has a third antigen 'H'. That's why it is also known as oh blood group........ Regards.

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O negative
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And it's mine...
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