ici 118,551 hcl ( 0.3 mg/kg + 0.1 mg/kg/h i.v . ) blocked the isoprenaline-induced hypotension , but did not affect the isoprenaline-induced tachycardia , suggesting that it selectively blocked beta 2-adrenoceptors .
C0022245
isoprenaline
C0039231
tachycardia