You should call 911 if a person exhibits which of the following:
-Drinking more than one kind of alcohol at a time
-inability to wake up and
-clammy or bluish skin.
These signs are not normal that can be harmful to the drinker. There might be some side-effects or allergies that caused the abnormal behavior or skin discoloration.
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Because they have antigens for both blood type A and B. And since blood type O has no antigen, that can also be received.
There will be no reaction against any other blood (importance of having both antigens)
