title: Structure-activity relationships of dermorphin tetrapeptide amides.
mesh_terms: D000818:Animals; D004558:Electric Stimulation; D006168:Guinea Pigs; D007082:Ileum / Q000187:drug effects; D066298:In Vitro Techniques; D009119:Muscle Contraction / Q000187:drug effects; D009842:Oligopeptides / Q000494:pharmacology*; D018847:Opioid Peptides; D013329:Structure-Activity Relationship
chemical_list: D009842:Oligopeptides; D018847:Opioid Peptides; C030058:dermorphin