the opioid agonists [ leucine ] enkephalin , [ d-ala2 , d-leu5 ] enkephalin and dynorphin- ( 1-13 ) -peptide , but not morphine , stimulated the conversion of [ 2-14c ] pyruvate into glucose and glycogenolysis when added directly to isolated hepatocytes .
C0014294
leucine ] enkephalin
C0014298
enkephalin