title: Contraceptive steroid administration by subdermal implants: serum concentrations of R-2323, estrogen and progesterone in rhesus monkeys.
mesh_terms: D000818:Animals; D003270:Contraceptive Agents / Q000494:pharmacology*; D004343:Drug Implants; D004967:Estrogens / Q000097:blood; D005260:Female; D008253:Macaca mulatta; D008598:Menstruation; D009645:Norgestrienone / Q000008:administration & dosage / Q000031:analogs & derivatives / Q000097:blood / Q000494:pharmacology*; D009651:Norpregnatrienes / Q000494:pharmacology*; D011374:Progesterone / Q000097:blood
chemical_list: D003270:Contraceptive Agents; D004343:Drug Implants; D004967:Estrogens; D009651:Norpregnatrienes; D011374:Progesterone; D009645:Norgestrienone