no difference existed in the isoprenaline induced tachycardia in pithed normotensive rats , 8-14 h after cessation of infusion with clonidine ( 300 microgram/kg/day ) and saline , clonidine and salbutamol ( 12 mg/kg/day ) , or saline alone .
C0022245
isoprenaline
C0039231
tachycardia