title: Increased analgesic activities of a fluorinated and a dimeric analogue of [D-Ala-2]-methionine enkephalinamide.
mesh_terms: D000700:Analgesics; D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects; D001681:Biological Assay; D004723:Endorphins / Q000138:chemical synthesis*; D004745:Enkephalins / Q000138:chemical synthesis* / Q000494:pharmacology; D005260:Female; D008297:Male; D051379:Mice; D051381:Rats; D013329:Structure-Activity Relationship; D014649:Vas Deferens / Q000187:drug effects
chemical_list: D000700:Analgesics; D004723:Endorphins; D004745:Enkephalins