the role of guanine nucleotide-binding proteins ( g proteins ) in the camp-dependent action of serotonin ( 5-ht ) and the antagonistic action of the neuropeptide phe-met-arg-phe-nh2 ( fmrf-amide ) , mediated by the lipoxygenase metabolites of arachidonic acid , was investigated in aplysia sensory neurons .
C0027895
neuropeptide
C0060608
fmrf-amide