This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
[{'content': 'Diagnosis of polio - \nSelect and explain. \nA. Detection of polio virus in stool, B. Serology, C. Limb wasting, D. AFP', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Detection of polio virus in stool Lab diagnosis of polioo Virus isolation in tissue culture is the best method for specific diagnosis.o Specimens - Blood, CSF, Throat swab, Feceso Primary monkey kidney cultures are used,o Serodiagnosis is less often employed.", 'role': 'assistant'}]