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': 'Primary granules in neutrophlis contain all except __. \nSelect and explain. \nA. Myeloperoxidase, B. Defensin, C. Acid hydrolases, D. Lactoferrin', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Neutrophils have two main types of granules\n\n\xa0The smaller specific\xa0 (or secondary) granules contain lysozyme,\xa0collagenase,\xa0gelatinase,\xa0lactoferrin,\xa0plasminogen activator,\xa0histaminase,\xa0and alkaline phosphatase.\xa0\n\xa0The larger azurophil (or primary) granules contain myeloperoxidase, bactericidal factors (such as defensins), acid hydrolases, and a variety of neutral proteases (elastase, cathepsin G, non-specific collagenases,\xa0proteinase).\n\nReference-Robbins BASIC PATHOLOGY 10th edition pg-68', 'role': 'assistant'}]