A) Rh factor
B) ABO blood group
C) MHC antigens
D) Hypersensitivity
Correct Answer: C
Solution :
MHC antigen is also known as histocompatibility antigen and in humans it is called HLA (human leukocyte antigen) group. The ability of the vertebrate immune system to distinguish self from non-self depends on these antigens. These are present on the surface of energy cell and are slightly different in all individuals. MHC antigen matching is essential before organ transplant.
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