SomatostatinReceptors, SomatostatinOctreotideSomatostatin-28Neuroendocrine TumorsCells, CulturedGastrinsSomatostatin-Secreting CellsGlucagonAcromegalyRNA, MessengerIndium RadioisotopesPeptides, CyclicGrowth Hormone-Releasing HormoneCarcinoid TumorPentetic AcidPituitary NeoplasmsReceptors, NeurotransmitterGrowth HormoneCell LineMolecular Sequence DataPancreatic HormonesHormonesGrowth Hormone-Secreting Pituitary AdenomaTumor Cells, CulturedPancreasCell DivisionMice, Inbred C57BLPancreatic PolypeptideImmunohistochemistryInsulinHormone AntagonistsIslets of LangerhansEndocrine Gland NeoplasmsAmino Acid SequenceBase SequenceVasoactive Intestinal PeptideSomatostatinomaGastric AcidCell DifferentiationDose-Response Relationship, DrugPancreatic NeoplasmsHuman Growth HormoneTime FactorsMotilinPituitary GlandSignal TransductionInterferon-gammaKineticsAdenoma, Islet CellCytokinesPyloric AntrumGastric MucosaGene ExpressionRadiopharmaceuticalsGastrointestinal HormonesCyclic AMPMice, KnockoutPentagastrinRats, Sprague-DawleySecretinPeptidesGene Expression RegulationCricetinaeLymphocyte ActivationAntineoplastic Agents, HormonalReverse Transcriptase Polymerase Chain ReactionVirulence Factors, BordetellaPertussis ToxinNeuropeptidesBombesinSecretory RateCholecystokininMalignant Carcinoid SyndromeInterleukinsNeuronsGastrointestinal NeoplasmsGalaninPhenotypeCysteamineNeuropeptide YMice, Inbred BALB CCD4-Positive T-LymphocytesInsulinomaCHO Cells