changes in jejunal water transport were examined in rats pretreated with bolus i.c.v . doses ( less than or equal to 1 microgram ) of the respective mu- , delta- , or kappa-opiate agonists [ d-ala2 , n-me-phe4 , gly5-ol ] enkephalin ( dago ) , [ d-pen2 , d-pen5 ] enkephalin or u-50488 and infused intravenously with the secretagogue prostaglandin e1 ( pge1 , 5 micrograms/kg-min ) .
C0525773
dago
C0014298
enkephalin