title: Interchangeability of Ca ions and Sr ions as charge carriers of the slow inward current in mammalian myocardial fibres.
mesh_terms: D000200:Action Potentials; D000818:Animals; D002118:Calcium / Q000502:physiology*; D002415:Cats; D004594:Electrophysiology; D006321:Heart / Q000502:physiology*; D066298:In Vitro Techniques; D007545:Isoproterenol / Q000494:pharmacology; D008564:Membrane Potentials; D009570:Nitriles / Q000494:pharmacology; D010210:Papillary Muscles / Q000502:physiology; D013324:Strontium / Q000502:physiology*
chemical_list: D009570:Nitriles; D007545:Isoproterenol; D002118:Calcium; D013324:Strontium