Carcinoid TumorMalignant Carcinoid SyndromeChromogranin AToluidinesCrotonatesCarcinoid Heart DiseaseGastrointestinal NeoplasmsChromograninsNeurosecretory SystemsSynaptophysinProto-Oncogene Proteins c-rafSerotoninCell Line, TumorIleal NeoplasmsBronchial NeoplasmsAppendiceal NeoplasmsHydroxyindoleacetic AcidCell ProliferationOctreotideIntestinal NeoplasmsNeuroendocrine TumorsACTH Syndrome, EctopicSignal TransductionThymus NeoplasmsEnterochromaffin CellsDuodenal NeoplasmsCarcinoma, NeuroendocrineParaneoplastic Endocrine SyndromesSomatostatinReceptors, SomatostatinAppendix