There are eight common blood types. Keyword there? Common. If what you know about blood stops right around there, then this is all going to escalate very quickly. There are literally millions of varieties of blood types, and the rarest one is shared by fewer than 45 people on Earth. Talk about exclusive.
Easy As A, B, O
There's Rare, Then There's Rhare
Written by Joanie Faletto September 9, 2017
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