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': 'T-cell mature in - \nSelect and explain. \nA. Peyers patch, B. lymph node, C. Thymus, D. Bursa of fabricius', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Thymus", 'role': 'assistant'}]