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': 'Mullerian inhibiting substance (MIS) is produced by \nSelect and explain. \nA. Stroma, B. Seoli cells, C. Leydig cells, D. Germ cells', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Mullerian inhibiting substance a glycoprotein produced by the Seoli cells of the fetal testis that acts in the males to suppress the mullerian ducts, consequently preventing the development of the uterus and fallopian tubes, thus helping to control the formation of the male phenotype.Ref: Ganong&;s review of medical physiology; 24th edition; page no: 392', 'role': 'assistant'}]