ovarian and uterine tissue concentrations of progesterone , 20alpha-dihydroprogesterone ( 20alphaohp ) and prostaglandin f ( pgf ) were measured during hormonally-induced pseudopregnancy , as were plasma levels of progesterone and 20alphaohp , in hysterectomised and sham-operated rats .
C0033308
progesterone
C0012311
dihydroprogesterone