Rh incompatibility is which type of hyper sensitivity reaction ?
Correct answer: B. Type II
- A. Type I
- B. Type II
- C. Type III
- D. Type IV
Explanation
Rh incompatibility is a Type II hypersensitivity because maternal IgG antibodies bind fetal Rh-positive red-cell antigens and promote their destruction. This is an antibody-mediated cytotoxic reaction, unlike the immune-complex mechanism of Type III reactions.
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