Streptococcus pyogenes shows pathogenicity by all except?
Ans. is 'c' i.e., Pili Virulence factors of str. pyogenes Str. pyogenes forms several exotoxins and enzymes which contribute to its virulence, but M protein is the most impoant of these.
M protein
Pyrotoxin
Pili
Streptolysin O