The antigen used in Weil Felix test is obtained from________________?
Correct answer: C. Proteus
- A. Pseudomonas
- B. coli
- C. Proteus
- D. Staphylococcus
Explanation
Weil-Felix testing uses Proteus strains, especially OX19, OX2 and OXK, because their antigens cross-react with rickettsial antibodies. The other listed bacteria are not used as the test antigen.
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