You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is All of the following are true about Clostridium perfringens, EXCEPT: and explain in detail?
Clostridium perfringens causes approximately 80% of cases of gas gangrene. All types of C perfringens produce the alpha toxin, a necrotizing, hemolytic exotoxin that is a lecithinase. The spores of some C perfringens strains are often paicularly heat-resistant and can withstand temperatures of 100degC for an hour or more. Smears of tissue and exudate samples show large gram-positive rods. C. perfringens colonies exhibit a double zone of hemolysis on blood agar. Egg yolk agar is used to demonstrate the presence of the lecithinase. Serologic tests are not useful. Ref: Brooks G.F. (2013). Chapter 21. Infections Caused by Anaerobic Bacteria. In G.F. Brooks (Ed), Jawetz, Melnick, & Adelberg's Medical Microbiology, 26e.