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: Physiology
[{'content': 'Testosterone production is mainly contributed by:March 2011, September 2011 \nSelect and explain. \nA. Leydig cells, B. Seoli cells, C. Seminiferous tubules, D. Epididymis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A: Leydig cellsLeydig/Interstitial cells secrete androgenic hormone testosterone at the time of pubey', 'role': 'assistant'}]