Microbiology Streptococcus all are true except A Streptodornase cleaves DNA B Streptolysis O is active in reduced state C Streptokinase is produced from serotype A, C, K D Pyrogenic toxin A is plasmid mediated π‘ Explanation Streptococcus all are true except β Correct Answer: D. Pyrogenic toxin A is plasmid mediated