in langendorff-perfused rabbit hearts electrically driven at 2 hz , sa2572 ( 5 x 10 ( -8 ) -10 ( -6 ) m ) produced concentration-dependent prolongations of the atrio-his bundle conduction time ( a-h interval ) and the his bundle-ventricular conduction time ( h-v interval ) concomitantly with a reduction of the developed tension of the ventricular muscle .
C0018787
hearts
C0006382
his bundle