This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology, Subject name: Microbiology
[{'content': 'Charcot Leyden crystal are derived from? \nSelect and explain. \nA. Macrphages, B. Eosinophils, C. Basophils, D. Neutrophils', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Charcot-Leyden crystals are microscopic crystals consist of lysophospholipase (galectin-10), an enzyme synthesized by eosinophils, and are produced from the breakdown of these cells Reff: Robbins basics of pathology', 'role': 'assistant'}]