title: Studies in the aromatization of a synthetic progestin.
mesh_terms: D002247:Carbon Isotopes; D002845:Chromatography; D003276:Contraceptives, Oral; D004997:Ethinyl Estradiol / Q000652:urine*; D005260:Female; D006801:Humans; D008297:Male; D009644:Norgestrel / Q000378:metabolism*
chemical_list: D002247:Carbon Isotopes; D003276:Contraceptives, Oral; D009644:Norgestrel; D004997:Ethinyl Estradiol