This Is the Rarest Blood Type in the World

The rarest blood type, known as Rhnull, wasn't discovered until 1961. Since then, scientists have indentified fewer than 50 people with it.

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Northern California Community Blood Bank - How rare is your blood type? The rarest blood type is the blood type not available when YOU need it! Make an appointment to donate today!

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Reasons You Might Not Be Able to Donate Blood

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This man has the rarest blood type in the world, known as Rh-null. It's known as the Golden Blood Type because of its rarity, being found in only 43 people throughout all

Distribution of rare blood group phenotypes selected by malaria in

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