title: Role of Na and Ca ions in the determination of isometrically developed tension of heart muscle.
mesh_terms: D000818:Animals; D002118:Calcium / Q000008:administration & dosage / Q000494:pharmacology*; D002415:Cats; D004558:Electric Stimulation; D006321:Heart / Q000187:drug effects / Q000502:physiology*; D066298:In Vitro Techniques; D007477:Ions; D009119:Muscle Contraction; D009991:Oscillometry; D009994:Osmolar Concentration; D010210:Papillary Muscles / Q000502:physiology; D012964:Sodium / Q000008:administration & dosage / Q000494:pharmacology*; D013997:Time Factors; D016276:Ventricular Function
chemical_list: D007477:Ions; D012964:Sodium; D002118:Calcium