blood types

blood types

blood types were first called for after thye 1600 after doctors tried to use animal blood as blood transfusion donors the results were disastrous

There are eight blood types

AB




AB -




A +




A -






B +




B -






O +






O -


with AB- being the most rare amongst them.

also you dont need the same blood as some else to get a blood transfusion some blood types are compatable

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