Gastrointestinal NeoplasmsDigestive System NeoplasmsUrologic NeoplasmsGastrointestinal TractRespiratory Tract NeoplasmsTracheal NeoplasmsUreteral NeoplasmsBiliary Tract NeoplasmsDigestive SystemCarcinoma, Transitional CellUrinary Bladder NeoplasmsDigestive System Physiological PhenomenaUpper Gastrointestinal TractTumor Markers, BiologicalGastrointestinal DiseasesTumor Necrosis Factor-alphaTumor BurdenLower Gastrointestinal TractCell Line, TumorStomachCarcinoid TumorIntestinal MucosaWilms TumorGastrointestinal Stromal TumorsNeoplasms, ExperimentalGenes, Tumor SuppressorIntestinesNeuroendocrine TumorsUrinary Tract InfectionsColonTumor Suppressor Protein p53Intestine, SmallAdenocarcinomaTumor Suppressor ProteinsUrinary TractCecumIntestine, LargeBrain Neoplasms