Multiple choice MIS stands for Mullerian inhibiting substance. It is secreted by ____________. cells of the prostate gland leydig cells sertoli cell cells of the seminal vesicles cells of Cowper’s Glands Reveal answer Fill a bubble to check yourself C Correct answer Explanation A Sertoli cell is a 'nurse' cell of the testes. The MIS glycoprotein is produced by Sertoli cells of the testes during fetal and neo-natal life in males.