title: Mechanism of positive inotropic actions of hydrazinium ions on bullfrog heart muscles.
mesh_terms: D000200:Action Potentials / Q000187:drug effects; D000818:Animals; D001001:Anura; D002118:Calcium / Q000494:pharmacology; D002463:Cell Membrane Permeability / Q000187:drug effects; D006321:Heart / Q000187:drug effects*; D006834:Hydrazines / Q000494:pharmacology*; D066298:In Vitro Techniques; D011892:Rana catesbeiana; D012964:Sodium / Q000494:pharmacology; D013268:Stimulation, Chemical
chemical_list: D006834:Hydrazines; D012964:Sodium; D002118:Calcium