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submitted 1 month ago by theMacerena@lemmings.world to c/world@quokk.au

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[–] 9tr6gyp3@lemmy.world 11 points 1 month ago (2 children)

There are about 47 known blood types, and they are not all just 1-2 letters.

[–] catty@lemmy.world 4 points 1 month ago

wow til

[–] SheeEttin@lemmy.zip 1 points 1 month ago* (last edited 1 month ago)

48. But the ABO and Rh systems are still the main categories.