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': 'Phagocytosis of mycobacterium tuberculosis by macrophages is mainly mediated by: \nSelect and explain. \nA. IL 6, B. IL 3, C. IL 12, D. IFN Gamma', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is. 'd' i. e., IFN Gamma", 'role': 'assistant'}]