title: Narcotic antagonists: the search for long-acting preparations: introduction.
mesh_terms: D000818:Animals; D003692:Delayed-Action Preparations; D004353:Drug Evaluation, Preclinical; D000882:Haplorhini; D006801:Humans; D051379:Mice; D009292:Narcotic Antagonists / Q000008:administration & dosage* / Q000627:therapeutic use; D011817:Rabbits; D051381:Rats
chemical_list: D003692:Delayed-Action Preparations; D009292:Narcotic Antagonists