title: Ionic mechanism of inotropic effect of veratrine on frog heart.
mesh_terms: D000200:Action Potentials / Q000187:drug effects; D000818:Animals; D001001:Anura; D004336:Drug Antagonism; D004558:Electric Stimulation; D006321:Heart / Q000187:drug effects*; D006325:Heart Atria / Q000187:drug effects; D066298:In Vitro Techniques; D009206:Myocardium / Q000378:metabolism; D011893:Rana esculenta; D012964:Sodium / Q000378:metabolism; D013779:Tetrodotoxin / Q000494:pharmacology; D014702:Veratrine / Q000037:antagonists & inhibitors / Q000494:pharmacology*
chemical_list: D013779:Tetrodotoxin; D012964:Sodium; D014702:Veratrine