title: Electrolytes and spontaneous rhythmicity of ventricular muscle.
mesh_terms: D000818:Animals; D001001:Anura; D002118:Calcium / Q000008:administration & dosage / Q000494:pharmacology*; D004562:Electrocardiography; D006321:Heart / Q000187:drug effects*; D006339:Heart Rate / Q000187:drug effects; D006352:Heart Ventricles / Q000187:drug effects; D010477:Perfusion; D011188:Potassium / Q000008:administration & dosage / Q000494:pharmacology*; D012964:Sodium / Q000008:administration & dosage / Q000494:pharmacology*; D013997:Time Factors
chemical_list: D012964:Sodium; D011188:Potassium; D002118:Calcium