analysis of the effects of the beta-adrenoceptor antagonists on i-cyp binding demonstrated that betaxolol ( 20 nm , beta 1-selective ) had no significant effect on specific grain density in either nonasthmatic or asthmatic human bronchus , whereas ici-118551 ( 20 nm , beta 2-selective ) inhibited i-cyp binding by 85 +/- 9 % and 89 +/- 3 % , respectively .
C0001643
beta-adrenoceptor
C0004096
asthmatic