on the isolated electrically driven muscle strip of human right atrial appendages the beta-adrenoceptor subtypes mediating the positive inotropic effects of isoprenaline , dobutamine and procaterol were characterized using the beta 1-selective antagonist bisoprolol and the beta 2-selective antagonist ici 118,551 .
C0086418
human
C0001643
beta-adrenoceptor