Agglutination with ‘O’ antigen of S. typhi is inhibited by :-
Correct Answer: Vi Ag
Description: Agglutination with 'O' antigen of S. typhi is inhibited by Vi antigen. Vi antigen: Surface polysaccharide envelope or capsular antigen covering the O antigen. Prevents its agglutination with O antiserum. Phage typing of S. typhi can be done by using Vi specific bacteriophages. Used for vaccination.
Category:
Microbiology
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