title: GnRH antagonists and antiprogestins: novel contraceptive options.
authors.forename: K
authors.initials: K
authors.lastname: Gordon
authors.forename: O
authors.initials: O
authors.lastname: Heikinheimo
authors.forename: A L
authors.initials: AL
authors.lastname: Goodman
mesh_terms: D001695:Biology; D003267:Contraception; D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D003272:Contraceptive Agents, Male; D003281:Contraceptives, Postcoital; D010064:Embryo Implantation; D004703:Endocrine System; D005193:Family Planning Services; D006727:Hormone Antagonists; D006728:Hormones; D008565:Membrane Proteins; D015735:Mifepristone; D010060:Ovulation; D010827:Physiology; D010906:Pituitary Hormone-Releasing Hormones; D013092:Spermatogenesis-Blocking Agents
chemical_list: D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D003272:Contraceptive Agents, Male; D003281:Contraceptives, Postcoital; D006727:Hormone Antagonists; D006728:Hormones; D008565:Membrane Proteins; D010906:Pituitary Hormone-Releasing Hormones; D013092:Spermatogenesis-Blocking Agents; D015735:Mifepristone
keywords: Biology; Contraception; Contraceptive Agents; Contraceptive Agents, Female; Contraceptive Agents, Male; Contraceptive Agents, Postcoital; Contraceptive Mode Of Action; Endocrine System; Family Planning; Hormone Antagonists; Hormone Receptors; Hormones; Implantation Suppression; Literature Review; Membrane Proteins; Ovulation Suppression; Physiology; Pituitary Hormone Releasing Hormones; Ru-486; Spermatogenesis Blocking Agents