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': 'The following virus can be grown only in suckling mice- \nSelect and explain. \nA. Coxsackie virus, B. Rhinovirus, C. Echovirus, D. Poliovirus', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Coxsackie virus . It is necessary to employ suckling mice for the isolation of coxsackie viruses. . Inoculation is usually made by intracerebral, subcutaneous and intraperitoneal route. . Adult mice are not susceptible.", 'role': 'assistant'}]