title: Possible mechanism of rate-dependent change of contraction in dog ventricular muscle: relation to calcium movements.
mesh_terms: D000200:Action Potentials; D000818:Animals; D001692:Biological Transport; D002118:Calcium / Q000378:metabolism*; D004285:Dogs; D004558:Electric Stimulation; D006352:Heart Ventricles / Q000187:drug effects; D009200:Myocardial Contraction / Q000187:drug effects; D009206:Myocardium / Q000378:metabolism*; D010042:Ouabain / Q000494:pharmacology; D016276:Ventricular Function; D014700:Verapamil / Q000494:pharmacology
chemical_list: D010042:Ouabain; D014700:Verapamil; D002118:Calcium