SomatostatinGlucagonReceptors, SomatostatinReceptors, GlucagonMice, KnockoutOctreotideSomatostatin-28InsulinGlucagon-Secreting CellsIslets of LangerhansPancreatic HormonesGene Knockout TechniquesSomatostatin-Secreting CellsLiverPancreasPancreatic PolypeptideGastrinsBlood GlucoseGlucoseNeuroendocrine TumorsHormonesGlucagon-Like PeptidesHypoglycemiaGrowth HormonePeptides, CyclicAcromegalyMice, Inbred C57BLIndium RadioisotopesProglucagonGluconeogenesisRats, Inbred StrainsAdenoma, Islet CellCyclic AMPGrowth Hormone-Releasing HormoneSecretinGastrointestinal HormonesPituitary NeoplasmsCarcinoid TumorPentetic AcidReceptors, NeurotransmitterGlucagon-Like Peptide 1Adenylate CyclaseSecretory RateDogsVasoactive Intestinal PeptideRNA, MessengerEpinephrineLiver GlycogenHormone AntagonistsGlucagonomaHuman Growth HormoneCells, CulturedDose-Response Relationship, DrugGrowth Hormone-Secreting Pituitary AdenomaEndocrine Gland NeoplasmsRadioimmunoassayPancreatic NeoplasmsReceptors, Gastrointestinal HormoneCholecystokininKineticsFastingGastric AcidImmunohistochemistryMotilinProtein PrecursorsC-PeptideSomatostatinomaTime FactorsNeuropeptidesPituitary GlandGastric MucosaPentagastrinHyperglycemiaMolecular Sequence DataPertussis ToxinArgininePerfusionVirulence Factors, BordetellaGastric Inhibitory PolypeptideInsulinomaCell LinePeptidesFatty Acids, NonesterifiedAmino Acid SequencePyloric AntrumColforsinBombesinGene Expression RegulationSignal TransductionGastrointestinal AgentsRadiopharmaceuticalsDisease Models, AnimalCalciumInsulin AntagonistsRats, Sprague-DawleyDiabetes Mellitus, ExperimentalLactatesCricetinaeBucladesineCarcinoma, Islet Cell