dynorphin 1-17 , 1-9 , 1-8 , 1-6 , [ leu5 ] enkephalin , dpdpe and dslet dose dependently stimulated the tone in the proximal , middle and distal colon with the maximum response at 10 ( -6 ) to 10 ( -5 ) m .
C0014298
enkephalin
C0525856
dpdpe