title: Progesterone metabolism in twins: progesterone biosynthesis in placenta in vitro.
mesh_terms: D000085:Acetates / Q000378:metabolism; D002247:Carbon Isotopes; D002784:Cholesterol / Q000378:metabolism; D002849:Chromatography, Gas; D002855:Chromatography, Thin Layer; D046508:Culture Techniques; D005260:Female; D006801:Humans; D008297:Male; D009243:NAD / Q000494:pharmacology; D009249:NADP / Q000494:pharmacology; D010920:Placenta / Q000378:metabolism*; D011247:Pregnancy; D011374:Progesterone / Q000032:analysis / Q000096:biosynthesis*; D013053:Spectrophotometry; D014427:Twins
chemical_list: D000085:Acetates; D002247:Carbon Isotopes; D009243:NAD; D011374:Progesterone; D009249:NADP; D002784:Cholesterol