the agonists norepinephrine ( ne ) , epinephrine ( e ) , phenylephrine ( p ) and isoproterenol ( iso ) were used at concentrations from 10 ( -12 ) to 10 ( 6 ) m in the presence and absence of cocaine 2.6 or 26x10 ( -6 ) m ( c , to prevent uptake of agonist in the synapse ) ;
C0028351
norepinephrine
C0014563
epinephrine