in the presence of low concentrations of beta 2-selective ici 118,551 , which did not antagonize beta 1-adrenoceptor mediated effects , ( - ) -bisoprolol antagonized positive chronotropic effects of ( - ) -adrenaline to the same extent as those of ( - ) -noradrenaline .
C0014563
adrenaline
C0028351
noradrenaline