Question

By how can we know the group of blood by testing​

Answer 1

Answer:

by seeing the reports...

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Answer 2

Explanation:

Blood types are determined by the presence or absence of particular antigens on the surface of red blood cells. There are eight main blood types: A positive, A negative, B positive, B negative, AB positive, AB negative, O positive and O negative. The positive and negative refers to your Rh type (once called Rhesus).

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