the dose-ratios ( ( - ) -isoprenaline equals 1 ) obtained for the positive chronotropic effects of the drugs in bilaterally vagotomized cats were 14.5 , 14.6 , 29.6 and 24.2 for adrenaline , noradrenaline , orciprenaline and salbutamol respectively .
C0014563
adrenaline
C0028351
noradrenaline