title: Opiate activity of [DAla2, delta zPhe4]-methionine-enkephalinamide.
mesh_terms: D000818:Animals; D001681:Biological Assay; D004305:Dose-Response Relationship, Drug; D004723:Endorphins / Q000494:pharmacology*; D004745:Enkephalins / Q000494:pharmacology*; D006168:Guinea Pigs; D007082:Ileum / Q000187:drug effects; D051379:Mice; D013329:Structure-Activity Relationship
chemical_list: D004723:Endorphins; D004745:Enkephalins