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': 'Which of the following is used for isolation for chlamydia - \nSelect and explain. \nA. Microimmunofluorescence, B. Yolk sac inoculation, C. ELISA, D. Immunofluorescence', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]