SecretinReceptors, Gastrointestinal HormoneReceptors, G-Protein-CoupledPhotoaffinity LabelsReceptors, Vasoactive Intestinal PeptideVasoactive Intestinal PeptideCystadenocarcinoma, MucinousCHO CellsPancreasCystadenoma, SerousPancreatic JuiceCricetinaeFluorescence Resonance Energy TransferReceptors, CalcitoninCOS CellsCyclic AMPAdenocarcinoma, PapillaryCholecystokininCercopithecus aethiopsCricetulusAmino Acid SequenceMolecular Sequence DataAutoradiographyRadioligand AssayCarcinoma, Pancreatic DuctalCarcinoid TumorSecretory RateGastrointestinal HormonesProtein MultimerizationHydrochloric AcidSecond Messenger SystemsDuodenumLigandsBicarbonatesGTP-Binding ProteinsPeptidesGastrinsIodine RadioisotopesProtein Structure, SecondarySequence Homology, Amino AcidDimerizationAmylasesProtein BindingZollinger-Ellison Syndrome