Following reaction are produced by heterophil antigens except_____________?
Correct answer: D. Widal reaction
- A. Forssman antigen antibody reaction
- B. Weil-Felix reaction
- C. Paul bunnel reaction
- D. Widal reaction
Explanation
Forssman, Weil-Felix, and Paul-Bunnell reactions depend on heterophile antibodies reacting with antigens found in unrelated species. The Widal test detects antibodies against specific Salmonella antigens and is not a heterophile reaction.
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