title: beta-Endorphin: complete primary structure is required for full analgesic activity.
mesh_terms: D000595:Amino Acid Sequence; D000596:Amino Acids / Q000032:analysis; D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects; D004305:Dose-Response Relationship, Drug; D004723:Endorphins / Q000494:pharmacology; D008297:Male; D051379:Mice; D008806:Mice, Inbred AKR; D010446:Peptide Fragments; D013329:Structure-Activity Relationship
chemical_list: D000596:Amino Acids; D004723:Endorphins; D010446:Peptide Fragments