Streptococcus all are true except :

Pyrogenic exotoxin Most strains of streptococcus pyogenes produce one or more toxins that are called pyrogenic exotoxins because of their ability to induce fever. Three types of streptococcal pyrogenic exotoxins have been identified, i.e. A, B, and C. - "The genes of SPE "A" and SPE 'C' are transmitted between the strains of streptococcus by bacteriophagedeg and stable production depends on lysogenic conversion". - "The genes for SPE B are coded by chromosomesQ".(not plasmids) SPE A and SPE C' are also called erythrogenic toxins as they are responsible .for rash observed in patients with scarlatina. - They have superantigen activity which causes massive release of inflammatory gtokines from T lymphocytes causing fever, shock and tissue damage. Pyrogenic exotoxin A Gene transmitted by /3 phase Pyrogenic extoxin B Gene transmitted by chromosome Pyrogenic exotoxin C Gene transmitted by fi phase