after 7 days , the animals were sacrificed , and the small intestine was removed and extracted for the assay of 6 neuropeptides ( substance p , vasoactive intestinal peptide , galanin , dynorphin a ( 1-8 ) , dynorphin a ( 1-17 ) and alpha-neo-endorphin ) .
C0027895
neuropeptides
C0060993
galanin