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: Surgery
[{'content': 'Fibroblasts in healing wound are derived from - \nSelect and explain. \nA. Local mesenchyme, B. Epithelium, C. Endothelium, D. Vascular fibrosis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Fibroblasts are specialized cells that differentiate from resting mesenchyme cells in connective tissue. They do not arrive in the wound cleft by diapedesis from circulating cells.', 'role': 'assistant'}]