Synonyms : 5-Ene-3 beta-hydroxysteroid Dehydrogenase, Steroid delta(5)-3 beta-ol Dehydrogenase, 3 beta Hydroxy delta 5 Steroid Dehydrogenase, 5 Ene 3 beta hydroxysteroid Dehydrogenase, Dehydrogenase, 3 beta-Hydroxy-delta-5-Steroid, Reductase, Progesterone