Question

Hey guys.
Types of blood?
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Answer 1

HEY MATE YOUR ANSWER IS:

There are four major blood groups determined by the presence or absence of two antigens – A and B – on the surface of red blood cells. In addition to the A and B antigens, there is a protein called the Rh factor, which can be either present (+) or absent (–), creating the 8 most common blood types (A+, A-, B+, B-, O+, O-, AB+, AB-).

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Answer 2

B+ ,B-,AB+,AB-,o+,o-,A+,A-

these are certain types of blood

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