Oral contraceptives and plasma amino-acids.
D000328:Adult; D000596:Amino Acids / Q000097:blood*; D003276:Contraceptives, Oral / Q000494:pharmacology*; D004997:Ethinyl Estradiol / Q000494:pharmacology; D005260:Female; D006801:Humans; D008598:Menstruation; D009640:Norethindrone / Q000494:pharmacology
D000596:Amino Acids; D003276:Contraceptives, Oral; D004997:Ethinyl Estradiol; D009640:Norethindrone