<prompt> Gas gangrene is caused by -rpt questionClostridium novyiClostridium septicumClostridium histolyticumClostridium perfrigens  <response>: Gas gangrene is rapidly spreading, edematous myonecrosis occurring characteristically in association with a severe wound of extensive muscle mass contaminated by pathogenic clostridia. The most frequently encountered is Clostridium perfringens. Reference: Textbook of Microbiology; Anathanarayan and panikers; 10th edition; Page no: 261 