This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'All are mediators of neutrophils except \nSelect and explain. \nA. Elastase, B. Cathepsin, C. Nitric oxide, D. None', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ref Robbins 8/e p53-54; 7/e p69;9/e p80 Cathepsin G is a serine protease secreted by activated neutrophils that play a role in the inflammatory response', 'role': 'assistant'}]