in the solitary nucleus of the medulla many neuronal cell bodies could be shown to be both immuno-positive for one of 6 neuropeptides including avian pancreatic peptide ( app ) , cholecystokinin ( cck ) , enkephalin ( enk ) , neurotensin ( nt ) , somatostatin ( som ) and substance p ( sp ) or the catecholamine synthesizing enzyme tyrosine hydroxylase ( toh ) and to have a projection to the parabrachial nucleus of the pons .
C0027895
neuropeptides
C0030298
pancreatic peptide