title: Verapamil and digitalics: experimental study on heart in situ of guinea-pig.
mesh_terms: D000818:Animals; D002118:Calcium / Q000494:pharmacology*; D004562:Electrocardiography; D006168:Guinea Pigs; D006321:Heart / Q000187:drug effects*; D014693:Ventricular Fibrillation / Q000188:drug therapy*; D014700:Verapamil / Q000494:pharmacology* / Q000627:therapeutic use
chemical_list: D014700:Verapamil; D002118:Calcium