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I SWEAR, I WILL SUE THE WIKIMEDIA FOUNDATION FOR $100,000,000 IF YOU DON'T QUIT, YOU'LL HAVE TO BLOW BUBBA ($5 EACH) 20 MILLION TIMES TO GET UNSCREWED, HEILHITLERFUCKSHITCUNTBITCHNIGGERFAGGOT!!!!!!!!! |
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{{redirect|ABO}}
The '''ABO blood group system''' is the most important [[blood type]] system (or blood group system) in human [[blood transfusion]]. The associated anti-A [[antibodies]] and anti-B antibodies are usually powerful [[IgM]] antibodies, which are usually produced in the first years of life by sensitization to environmental substances such as food, [[bacteria]] and [[viruses]]. ABO blood types are also present in [[ape]]s such as [[chimpanzee]]s, [[bonobo]]s and [[gorilla]]s.
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