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: Skin
[{'content': 'Which of the following is responsible for protection from ultraviolet rays: September 2011 \nSelect and explain. \nA. Stratum corneum, B. Langerhans cells, C. Apocrine sweat glands, D. Melanocyte', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D: Melanocyte Structure involved in protection against ultraviolet radiation is melanin produced by melanocytes and transferred to keratinocytes', 'role': 'assistant'}]