chick retina was screened for neuropeptide-metabolizing peptidase activity during development using a kininase bioassay in which hydrolysis of any peptide bond of bradykinin ( arg1-pro2-pro3-gly4-phe5-ser6-pro7-phe8-arg9 ) leads to inactivation , combined with chromatographic bradykinin-product analysis .
C0027895
neuropeptide
C0006100
bradykinin