Virulence factor of group A beta hemolytic streptococci:-
Correct Answer: Protein M
Description: Option 1 2 3 Cell wall antigens: Inner thick peptidoglycan layer (confers cell wall rigidity, induces inflammatory response and has thrombolytic activity) C-carbohydrate antigen: Present as middle layer and is group specific Outer layer of protein (M, T, R) and lipoteichoic acid (helps in adhesion) M protein - Major virulence factor of S pyogenes Option 4 Outer layer of lipoteichoic acid (helps in adhesion)
Category:
Microbiology
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