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': 'The eosinophil secrete all except \nSelect and explain. \nA. Major basic protein, B. Hydrolytic enzyme, C. Reactive form of oxygen, D. Eosinophilic chemotactic factor', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ref Robbins 8/e p54 Hydrolytic enzymes are secreted by lysosomes lysosome (/'laIs@,soUm/) is a membrane-bound organelle found in many animal cells. They are spherical vesicles that contain hydrolytic enzymes that can break down many kinds of biomolecules. A lysosome has a specific composition, of both its membrane proteins, and its lumenal proteins.", 'role': 'assistant'}]