This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lymphoid tissue & Integumentary system, Subject name: Anatomy
[{'content': 'After their maturation in the thymus and release into the circulation, T lymphocytes migrate preferentially to which of the following sites? \nSelect and explain. \nA. Para coex of lymph nodes, B. Coical lymphoid nodules of lymph nodes, C. Hilum of lymph nodes, D. Lymphoid nodules of the tonsils', 'role': 'user'}, {'content': 'Answer: A \nExplanation: T lymphocytes are preferentially located in the paracoex of lymph nodes', 'role': 'assistant'}]