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': 'Electron microscopy is helpful in diagnosis of -a) Rotavirusb) RSVc) Herpesvirusd) Prion \nSelect and explain. \nA. a, B. ac, C. ad, D. b', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Rotavirus culture is difficult\nSo, electron microscopy is useful in diagnosis of Rotavirus infection\nThey characteristically appear as little wheels with short spokes radiating from a wide hub to a clearly defined outer\xa0rim.\nThe name Rota is derived from Latin word ‘rota’ means wheel.', 'role': 'assistant'}]