binding of 125i-gastrin was inhibited with the following relative potencies ( kd ) : cholecystokinin octapeptide ( cck-8 ) ( 0.35 nm ) greater than gastrin-17-i = gastrin-34-i ( 1.5 nm ) greater than pentagastrin ( 7 nm ) greater than desulfated [ des ( so3 ) ] cck-8 ( 28 nm ) greater than cck-4 ( 508 nm ) and by the receptor antagonists cbz-cck-27-32-nh2 ( 3.5 microm ) greater than proglumide analogue 10 ( 30 microm ) greater than asperlicin ( 265 microm ) greater than bt2-guanosine 3',5'-cyclic monophosphate ( 828 micron ) .
C0017151
gastrin
C0030859
pentagastrin