title: Progress in biological research and drug development.
mesh_terms: D001665:Binding Sites; D004723:Endorphins; D006728:Hormones; D009892:Opium; D010455:Peptides; D010600:Pharmacology; D011453:Prostaglandins; D011600:Psychopharmacology; D011955:Receptors, Drug; D012106:Research
chemical_list: D004723:Endorphins; D006728:Hormones; D010455:Peptides; D011453:Prostaglandins; D011955:Receptors, Drug; D009892:Opium