This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc., Subject name: Pathology
[{'content': 'Which one of the following impairs epithelialization in wound healing? \nSelect and explain. \nA. BGF, B. PDGF, C. Fibronectin, D. TGF', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (A) BGF', 'role': 'assistant'}]