title: Relation of cardiac myofibrillar ATPase activity to increased contractile state.
mesh_terms: D000251:Adenosine Triphosphatases / Q000037:antagonists & inhibitors / Q000378:metabolism*; D000255:Adenosine Triphosphate / Q000494:pharmacology; D000818:Animals; D001386:Azides / Q000494:pharmacology; D002415:Cats; D004077:Digoxin / Q000494:pharmacology; D008274:Magnesium / Q000494:pharmacology; D008928:Mitochondria / Q000201:enzymology; D009119:Muscle Contraction / Q000187:drug effects; D009206:Myocardium / Q000201:enzymology*; D009210:Myofibrils / Q000201:enzymology*; D009638:Norepinephrine / Q000494:pharmacology; D010042:Ouabain / Q000494:pharmacology; D010210:Papillary Muscles / Q000187:drug effects; D013974:Thyroxine / Q000494:pharmacology; D013997:Time Factors
chemical_list: D001386:Azides; D010042:Ouabain; D004077:Digoxin; D000255:Adenosine Triphosphate; D000251:Adenosine Triphosphatases; D008274:Magnesium; D013974:Thyroxine; D009638:Norepinephrine