Interval dependent inotropic effects in the rat myocardium and the effect of calcium.
D000818:Animals; D002118:Calcium / Q000172:deficiency / Q000494:pharmacology*; D002128:Calcium Metabolism Disorders / Q000378:metabolism; D004558:Electric Stimulation; D006321:Heart / Q000187:drug effects*; D008297:Male; D009119:Muscle Contraction; D010210:Papillary Muscles; D051381:Rats; D013997:Time Factors
D002118:Calcium