title: Phylogenetic distribution of a morphine-like peptide 'enkephalin'.
mesh_terms: D000818:Animals; D001921:Brain / Q000187:drug effects / Q000378:metabolism; D001923:Brain Chemistry; D002462:Cell Membrane / Q000187:drug effects / Q000378:metabolism; D007977:Levallorphan / Q000494:pharmacology; D008345:Manganese / Q000494:pharmacology; D008970:Molecular Weight; D009270:Naloxone / Q000378:metabolism*; D009419:Nerve Tissue Proteins / Q000032:analysis*; D009842:Oligopeptides / Q000032:analysis*; D010802:Phylogeny; D011955:Receptors, Drug; D012964:Sodium / Q000494:pharmacology; D013045:Species Specificity; D013237:Stereoisomerism
chemical_list: D009419:Nerve Tissue Proteins; D009842:Oligopeptides; D011955:Receptors, Drug; D007977:Levallorphan; D009270:Naloxone; D008345:Manganese; D012964:Sodium