This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteria, Subject name: Microbiology
[{'content': 'Shigellosis is best diagnosed by - \nSelect and explain. \nA. Stool examination, B. Stool culture, C. Sigmoidoscopy, D. Enzyme', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. is \'b\' i.e., Stool culture Lah diagnosis of shigellosis"Diagnosis is made by isolating the bacillus from feces. "o Transport media# Sack s buffered glycerol salineo Culture# Specimens are inoculated on :MacConkey mediumDeoxycholate medium (DCA) - Selective mediumHektoen entric agar or salmonella-shigella agar - Selective medium.', 'role': 'assistant'}]