title: Biodegradable systems for the sustained release of fertility-regulating agents.
mesh_terms: D000818:Animals; D003271:Contraceptive Agents, Female / Q000494:pharmacology; D003692:Delayed-Action Preparations; D005260:Female; D005298:Fertility / Q000187:drug effects*; D000882:Haplorhini; D007700:Kinetics; D007783:Lactones / Q000378:metabolism; D009640:Norethindrone / Q000378:metabolism; D009644:Norgestrel / Q000378:metabolism; D010215:Papio; D011108:Polymers / Q000378:metabolism; D011817:Rabbits; D051381:Rats
chemical_list: D003271:Contraceptive Agents, Female; D003692:Delayed-Action Preparations; D007783:Lactones; D011108:Polymers; D009644:Norgestrel; D009640:Norethindrone