title: Sr action potentials in cardiac Purkynĕ fibres. II. Dependence of the Sr conductance on the external Sr concentration and Sr-Ca antagonism.
mesh_terms: D000200:Action Potentials; D000818:Animals; D002118:Calcium / Q000494:pharmacology*; D002417:Cattle; D004594:Electrophysiology / Q000187:drug effects; D006329:Heart Conduction System / Q000502:physiology*; D008274:Magnesium / Q000494:pharmacology; D008345:Manganese / Q000494:pharmacology; D008564:Membrane Potentials; D013324:Strontium / Q000037:antagonists & inhibitors / Q000494:pharmacology / Q000502:physiology*
chemical_list: D008345:Manganese; D008274:Magnesium; D002118:Calcium; D013324:Strontium