title: The effect of sodium ions of MEPP frequency at the frog neuromuscular junction.
mesh_terms: D000200:Action Potentials / Q000187:drug effects*; D000818:Animals; D001001:Anura; D002118:Calcium / Q000494:pharmacology; D006358:Hot Temperature; D066298:In Vitro Techniques; D009469:Neuromuscular Junction / Q000187:drug effects / Q000502:physiology*; D009994:Osmolar Concentration; D011896:Rana temporaria; D012964:Sodium / Q000494:pharmacology*
chemical_list: D012964:Sodium; D002118:Calcium