3(or 17)beta hydroxysteroid dehydrogenase nonhuman 32 Animals 20 article 20 priority journal 20 steroidogenesis 20 animal tissue 18 enzyme activity 18 male 18 Progesterone 16 controlled study 16 progesterone 16 rat 14 Male 12 animal experiment 12 pregnenolone 12 testis 12 toad 12 unclassified drug 12 3-Hydroxysteroid Dehydrogenases 10 Female 10 Rats 10 animal 10 animal cell 10 cholesterol monooxygenase (side chain cleaving) 10 protein expression 10 Article 8 Pregnancy 8 Rats, Sprague-Dawley 8 Testis 8