by the way, i thought all along that type AB is the rarest blood type. it's type O after all?
Type AB = Universal acceptors
Type O = Universal donors
People who are Type AB have antigens A & B in their blood, which means that they can accept blood from Types A, B, or O. Type O blood has no antigens in the blood, which means that people with Types A, B or AB can accept Type O blood, but people with Type O blood cannot accept blood from Type A, B, or AB. Individuals with Type O blood can only accept Type O blood.
It is important to be aware of patient blood types. If a patient is accidentally given the wrong blood type, then a hemolytic reaction might occur, in which the host's body will attack the donor blood. This is a systemic emergency.
So to reiterate, Isles, people who are type O are considered universal donors, and people with type AB are considered universal acceptors. Type O- is the rarest.
I hope that helped.
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