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: Dental
[{'content': '"Birbeck granules" are seen in \nSelect and explain. \nA. Melanosomes, B. Lamellar bodies, C. Keratohyalin granules, D. Langerhan cells', 'role': 'user'}, {'content': 'Answer: D \nExplanation: "Tennis racket" shaped Birbeck granules are seen in Langerhan cells, which are antigen presenting cells present in epidermis.', 'role': 'assistant'}]