title: Frequency-dependent changes in the electromechanical and (Na+, K+)-ATPase activity of cardiac muscle.
mesh_terms: D000200:Action Potentials; D000251:Adenosine Triphosphatases / Q000378:metabolism*; D000818:Animals; D004558:Electric Stimulation; D004837:Epinephrine / Q000494:pharmacology; D000882:Haplorhini; D007700:Kinetics; D008274:Magnesium / Q000494:pharmacology; D009200:Myocardial Contraction / Q000187:drug effects; D009206:Myocardium / Q000201:enzymology*; D010042:Ouabain / Q000494:pharmacology; D011188:Potassium / Q000378:metabolism; D011802:Quinidine / Q000494:pharmacology; D012413:Rubidium / Q000494:pharmacology; D012508:Sarcolemma / Q000201:enzymology; D012964:Sodium / Q000378:metabolism
chemical_list: D010042:Ouabain; D012964:Sodium; D000251:Adenosine Triphosphatases; D008274:Magnesium; D011802:Quinidine; D012413:Rubidium; D011188:Potassium; D004837:Epinephrine