title: Interaction of divalent cations and barbiturates on four identified leech neurons.
mesh_terms: D000200:Action Potentials / Q000187:drug effects*; D000818:Animals; D001463:Barbiturates / Q000494:pharmacology*; D002118:Calcium / Q000378:metabolism / Q000494:pharmacology*; D007865:Leeches / Q000378:metabolism / Q000502:physiology*; D008274:Magnesium / Q000494:pharmacology; D009431:Neural Conduction; D009474:Neurons / Q000502:physiology*; D013757:Tetraethylammonium Compounds / Q000494:pharmacology
chemical_list: D001463:Barbiturates; D013757:Tetraethylammonium Compounds; D008274:Magnesium; D002118:Calcium