Compare and contrast ABO and Rh blood groups.
ABO blood grouping has 2 surface antigens( antigen A and antigen B) and respective antibodies against these antigens ( anti-A and anti-B).
There are four possible blood group in ABO system-
1. A blood group- has antigen A and anti-B antibody.
2. B blood group- has antigen B and anti-A antibody.
3. AB blood group- has both A and B antigen but no antibody.
4. O blood group- has no antigen but has both anti-A and anti-B antibody.
Rh blood grouping on the other hand has two group possible.
1. Rh postive group- in which Rh antigen is present.
2. Rh negative group- in which Rh antigen is not present
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