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: Pathology
[{'content': 'Most effective bacterial system within phagocytes is- \nSelect and explain. \nA. Lysozyme mediated, B. Lactoferrin mediated, C. Reactive oxygen metabolite mediated, D. Cationic basic protein mediated', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. is `c i.e. Reactive oxygen metabolite mediatedMicrobial killing (bactericidal activity) is largely mediated by oxygen dependent mechanisms. The most effective/ efficient bactericidal system within phagocytes is the oxygen dependent (H202-MPO-Halide system that mediates bacterial killing by the generation of HOCI with the help of myeloperoxidase and H202.', 'role': 'assistant'}]