SomatostatinReceptors, SomatostatinOctreotideSomatostatin-28Enzyme-Linked Immunosorbent AssayNeuroendocrine TumorsGastrinsSomatostatin-Secreting CellsAcromegalyGlucagonSimbu virusPeptides, CyclicGrowth Hormone-Releasing HormoneCarcinoid TumorPentetic AcidPituitary NeoplasmsGrowth HormoneReceptors, NeurotransmitterPancreatic HormonesHormonesGrowth Hormone-Secreting Pituitary AdenomaPancreasPancreatic PolypeptideInsulinEndocrine Gland NeoplasmsHormone AntagonistsIslets of LangerhansVasoactive Intestinal PeptideSomatostatinomaGastric AcidPancreatic NeoplasmsHuman Growth HormoneMotilinPituitary GlandAdenoma, Islet CellPyloric AntrumGastric MucosaGastrointestinal HormonesRadiopharmaceuticalsRNA, MessengerPentagastrinSensitivity and SpecificitySecretinAntineoplastic Agents, HormonalPertussis ToxinVirulence Factors, BordetellaBombesinImmunohistochemistryMalignant Carcinoid SyndromeSecretory RateCholecystokininNeuropeptidesGastrointestinal NeoplasmsGalaninDose-Response Relationship, DrugCysteamineRadioimmunoassayInsulinoma