This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sex Hormones, Subject name: Physiology
[{'content': 'MIS is secreted by? \nSelect and explain. \nA. Sertoli cell, B. Leidig cell, C. Supporting cells, D. Semeniferous tubules', 'role': 'user'}, {'content': "Answer: A \nExplanation: ANSWER: (A) Sertoli cellREF: Ganong's 22nd ed chapter 23See previous question for explanation", 'role': 'assistant'}]