title: Excitation--contraction coupling in frog heart. Effect of veratrine.
mesh_terms: D000200:Action Potentials / Q000187:drug effects; D000818:Animals; D004553:Electric Conductivity / Q000187:drug effects; D006321:Heart / Q000187:drug effects*; D006325:Heart Atria; D008094:Lithium / Q000378:metabolism; D008564:Membrane Potentials / Q000187:drug effects; D009206:Myocardium / Q000378:metabolism; D010477:Perfusion; D011893:Rana esculenta; D012964:Sodium / Q000378:metabolism*; D012996:Solutions; D013779:Tetrodotoxin / Q000494:pharmacology; D014702:Veratrine / Q000494:pharmacology*
chemical_list: D012996:Solutions; D013779:Tetrodotoxin; D008094:Lithium; D012964:Sodium; D014702:Veratrine