This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abdomen and pelvis, Subject name: Anatomy
[{'content': 'Blood-testis barrier is formed by \nSelect and explain. \nA. Seoli cells, B. Leydig cells, C. Epididymis, D. Vas deferens', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The name "blood-testis barrier" is misleading in that it is not a blood-organ barrier in a strict sense, but is formed between Seoli cells of the seminiferous tubule and as such isolates the fuher developed stages of germ cells from the blood. imageref-sciencedirect.com', 'role': 'assistant'}]