title: Electrically induced automaticity in ventricular myocardium.
mesh_terms: D000818:Animals; D002118:Calcium / Q000494:pharmacology; D004558:Electric Stimulation; D005071:Evoked Potentials / Q000187:drug effects*; D006168:Guinea Pigs; D006329:Heart Conduction System / Q000502:physiology*; D066298:In Vitro Techniques; D010210:Papillary Muscles / Q000502:physiology*; D012964:Sodium / Q000494:pharmacology; D013779:Tetrodotoxin / Q000494:pharmacology; D016276:Ventricular Function; D014700:Verapamil / Q000494:pharmacology
chemical_list: D013779:Tetrodotoxin; D012964:Sodium; D014700:Verapamil; D002118:Calcium