three and 11 wk after coronary artery ligation in rats , the right and left ventricular free wall , septum , and papillary muscles from infarcted and sham-operated hearts were analyzed to determine whether regional variability existed in cardiac actomyosin adenosine triphosphate ( atpase ) activity and myosin isoenzymes .
C0205042
coronary artery
C0018787
hearts