Baseline Characteristics: Experiments with Young Adult and Aged Rats.

<p>Values shown are the means ± SEM. The value of "n" shown beside each number in brackets represents the number of animals or myocytes. Values represent peak contractions (expressed as % cell length) and Ca²⁺ transients recorded prior to ischemia in myocytes paced at 4 Hz.</p>*<p>Denotes significantly different from young male animal p<0.05.</p>†<p>Denotes significantly different from aged female animal, p<0.05.