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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Proteus antigen cross react with:
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The correct answer is  Ans. 'c' i.e., Rickettsiae(Ref: Ananthanarayan, 9th/e, p. 410)Proteus antigens (OX19, OX2, OXK Strains) cross reacts with group specific alkali stable lipopolysaccharide rickettsial antigens. The application of this property is done in the Weil Felix (heterophile agglutination) test.