This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
[{'content': 'Toxins are implicated as the major pathogenic mechanism in all of the following bacterial diarrheas except - \nSelect and explain. \nA. Vibrio cholerae, B. Shigella sp, C. Vibrio parahemolyticus, D. Staphylococcus aureus', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. is \'c\' i.e., Vibrio parahemolyticus "No enterotoxin has been identified with vibrio parahemolyticus. The vibrio is believed to cause enteritis by invasion of the intestinal epithelium"', 'role': 'assistant'}]