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': 'Most impoant bactericidal agent is \nSelect and explain. \nA. Cationic basic protein, B. Lactoferrin, C. Lysozyme, D. Reactive oxygen species', 'role': 'user'}, {'content': 'Answer: D \nExplanation: H2O2 -MPO - halide system is the most efficient bacterial system of neutrophils It is most efficient in Phagocytosis ref Robb ins 9/e p79', 'role': 'assistant'}]