You can't tell who's your type by looking at someone.You have to look at their blood. No blood type is better
than another. They are just different!
Not All Blood Is The Same
There are 4 main types of blood. They are called A, B, AB, & O types. Each type has different kinds of
structures on the "skin" of their red cells. Some blood types mix fine - others don't. If the wrong blood
is given, your immune system will recognize it. Your white blood cells will attack and destroy the new
blood, making you very sick.
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