Doctor reacts to rarest blood type! #shorts

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What is the difference between being RH negative and being RHnull?

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Humans with Rh-Negative Blood Evolved from Aliens (S11) | Ancient Aliens | The UnXplained Zone

隠されたRHマイナス血液の謎 禁断の話題

BLOOD TYPES 🩸! why do we have different blood types?

[English] - Rh-Negative Blood Group

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