two peptides , the completely active carboxyl terminal heptapeptide from cck ( cck-7 ) , whose sequence is tyr-met-gly-trp-met-asp-phe-nh2 , and the carboxyl terminal heptapeptide from cerulein ( cer-7 ) which has the same sequence as for cck-7 except for replacement of met 2 with a thr 2 , both stimulate peripheral receptors in gall bladder , pancreas , and pylorus in the gastrointestinal system .
C0030274
pancreas
C0012240
gastrointestinal system