This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology, Subject name: Microbiology
[{'content': 'Marker of chronic inflammation is? \nSelect and explain. \nA. IL-1, IL-6, B. IL-1, TNF, C. IL-6, TNF, D. IL-12, IFN-g', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Interleukin 12 and Interferon-gamma are the major markers of chronic inflammation. REF:Textbook of microbiology, Ananthanarayan, and Paniker.', 'role': 'assistant'}]