This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Physiology
[{'content': 'Leydig cells secrete \nSelect and explain. \nA. Inhibin, B. MIS, C. Testosterone, D. Androgen binding protein', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Leydig cells are the cells between the seminiferous tubules of the testis that secrete testosterone.Ref: Ganong&;s review of medical physiology; 24th edition; page no:-394', 'role': 'assistant'}]