How many possible blood antigen combinations are there?
1 Answer
Mar 1, 2017
there are two types of antigens in ABO human blood grouping system.
Explanation:
there are two antigens in ABO human blood grouping system:
- A
- B
These antigens form four types of blood groups:
- A only A antigen present
- B only B antigen present
- AB both A and B antigens present
- O neither A nor B antigen present
Each blood group may be either Rh positive or Rh negative, due to presence or absence of rhesus antigen.
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