title: Inactivity of enkephaline on human serum esterase.
mesh_terms: D004950:Esterases / Q000097:blood*; D008024:Ligands; D009419:Nerve Tissue Proteins / Q000494:pharmacology*; D009842:Oligopeptides / Q000494:pharmacology*; D011955:Receptors, Drug; D013329:Structure-Activity Relationship
chemical_list: D008024:Ligands; D009419:Nerve Tissue Proteins; D009842:Oligopeptides; D011955:Receptors, Drug; D004950:Esterases