title: Bioavailability of contraceptive steroids from capsules.
mesh_terms: D000328:Adult; D001682:Biological Availability; D002214:Capsules; D004997:Ethinyl Estradiol / Q000008:administration & dosage / Q000097:blood*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009640:Norethindrone / Q000008:administration & dosage / Q000097:blood*; D014677:Pharmaceutical Vehicles; D013607:Tablets
chemical_list: D002214:Capsules; D014677:Pharmaceutical Vehicles; D013607:Tablets; D004997:Ethinyl Estradiol; D009640:Norethindrone