This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
[{'content': 'Fibrosis is due to- \nSelect and explain. \nA. TGF-b, B. TNF-a, C. IL - 7, D. IL -10', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Robbins and Cotran pathologic basis of disease South Asia edition. Robbins 9/e p46 *activated macrophages secrete 1 growth factors ,TGF Beta:tissue repair and fibrosis. 2 IL 10 ,TGF Beta: anti inflammatory effect.', 'role': 'assistant'}]