This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Physiology
[{'content': 'Which of the following is not secreted by Seoli cells? \nSelect and explain. \nA. Activin, B. Inhibin, C. Follistatin, D. Relaxin', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Relaxin a polypeptide hormone secreted by the corpora lutea of mammalian species during pregnancy. Facilitates the bih process by causing a softening and lengthening of the pubic symphysis and cervix; it also inhibits contraction of the uterus and may play a role in timing of paurition.Ref: Ganong&;s review of medical physiology;24th edition; page no:-427', 'role': 'assistant'}]