Question:
The H-antigen in Salmonella typhi is associated with
The H-antigen in Salmonella typhi is associated with
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The H-antigen is made of flagellin, the protein of the flagellum.
Updated On: Nov 12, 2026
- Capsule
- Flagella
- Cell wall
- Cytoplasm
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept
Salmonella typhi has surface antigens used in serotyping, for example in the Widal test.
Step 2: The antigens
O antigen is the cell wall lipopolysaccharide. Vi antigen is in the capsule. H antigen is the protein flagellin.
Step 3: Conclusion
Flagellin forms the flagella, so H-antigen is associated with flagella.
Final Answer:
The H-antigen is associated with flagella. \[ \boxed{\text{(B) }\text{Flagella}} \]
Salmonella typhi has surface antigens used in serotyping, for example in the Widal test.
Step 2: The antigens
O antigen is the cell wall lipopolysaccharide. Vi antigen is in the capsule. H antigen is the protein flagellin.
Step 3: Conclusion
Flagellin forms the flagella, so H-antigen is associated with flagella.
Final Answer:
The H-antigen is associated with flagella. \[ \boxed{\text{(B) }\text{Flagella}} \]
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