Relative selectivity of adrenoceptor agonists  agonists: PHENYLEPHRINE, METHOXAMINE  1 >  2 >>>>> ß CLONIDINE, M-NOREPINEPHRINE  2 >  1 >>>>> ß  & ß agonists: NOREPINEPHRINE  1 =  2; ß1 >> ß2 EPINEPHRINE  1 =  2; ß1 = ß2 ß agonists: ISOPROTERENOL ß1 = ß2; >>>>>  DOBUTAMINE ß1 > ß2 >>>>>  TERBUTALINE, ALBUTEROL ß2 >> ß1 >>>> 
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