the demonstration of depolarization-induced release of substance p , met- and leu-enkephalin , somatostatin , neurotensin , vasoactive intestinal polypeptide and cholecystokinin-like material from various regions of rat brain in vitro supports the hypothesis that these and other neuropeptides may act as neurotransmitters .
C0027930
neurotensin
C0027895
neuropeptides