the antisera thus produced specifically react with an amino-terminal region of cck-8 but not with the non-sulfate form of cck-8 , nor with the carboxy-terminal region which shares a cross-reactive determinant among gastrin and cholecystokinin-related peptides ( caerulein , cck-4 , cck-8 , cck-33 and cck-39 ) .
C0017151
gastrin
C0039659
cck-4