vasoactive intestinal peptide dose-dependently stimulated progesterone , 20 alpha-hydroxypregn-4-ene-3-one ( 20 alpha-oh-progesterone ) , and estrogen production with an approximate ed50 value of 3 x 10 ( -8 ) m .
C0012311
20 alpha-hydroxypregn-4-ene-3-one
C0033308
progesterone