This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Basic Concepts and Vascular changes of Acute Inflammation, Subject name: Pathology
[{'content': 'Which of the following is not present in azurophil granules of neutrophil? \nSelect and explain. \nA. Defensins, B. Myeloperoxidase, C. Acid hydrolases, D. Lactoferrin', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Lactoferrin is present in secondary/specific granules. Neutrophils have two main types of granules:- The smaller specific (or secondary) granules contain:- The larger azurophil (or primary) granules contain:- Lysozyme Collagenase Lactoferrin Plasminogen activator Histaminase Alkaline phosphatase Myeloperoxidase Bactericidal factors (defensins) Acid hydrolases A variety of neutral proteases (elastase, cathepsin G, non-specific collagenases, proteinase 3).', 'role': 'assistant'}]