Actually it's the other way around ~ If you have a positive blood type, you have a Rh antigen present. If you are negative you do not have it. O- blood is the universal donor, because it does not...
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Actually it's the other way around ~ If you have a positive blood type, you have a Rh antigen present. If you are negative you do not have it. O- blood is the universal donor, because it does not...