Precancerous ConditionsAdenomaHyperplasiaSulfadimethoxineCarcinogensColonoscopyDiethylnitrosamineSigmoidoscopesCarcinoma in SituCarcinogenicity TestsColonic PolypsHycanthoneLiver Neoplasms, ExperimentalMethyldimethylaminoazobenzeneRats, Inbred F344Uterine Cervical NeoplasmsImmunohistochemistryRodent DiseasesCervical Intraepithelial NeoplasiaEndoscopy, GastrointestinalCocarcinogenesisUroplakin IaAdenomatous PolypsAdenocarcinomaGastrointestinal NeoplasmsBiopsyCarcinoma, Squamous CellCystsPapillomaviridaePapillomaPolyps1,2-DimethylhydrazineTransketolasePapillomavirus InfectionsDissectionDimethylhydrazinesButylhydroxybutylnitrosamineLiver NeoplasmsColorectal NeoplasmsColonic NeoplasmsNitrosaminesCarcinomaMammary Neoplasms, AnimalMethylnitrosoureaBarrett EsophagusDog DiseasesEsophageal NeoplasmsRetrospective StudiesMetaplasiaNeoplasms, ExperimentalIntestinal MucosaTumor Markers, BiologicalHistocytochemistryMucous MembraneKidney NeoplasmsDisease ProgressionColonTime FactorsNeoplasms, Multiple PrimaryStomach NeoplasmsTumor Virus InfectionsSkin NeoplasmsMouth NeoplasmsGenes, rasPancreatic NeoplasmsSensitivity and SpecificityNeoplasm InvasivenessGastric MucosaEpitheliumLiverPolymerase Chain ReactionCervix UteriCell Transformation, NeoplasticNeoplasmsMutationDisease Models, AnimalUrinary BladderColitis, UlcerativeUrinary Bladder NeoplasmsThyroid NeoplasmsLung NeoplasmsImmunoenzyme TechniquesMice, TransgenicDNA, NeoplasmOrgan SizePredictive Value of TestsCell DivisionNeoplasm ProteinsBody WeightMagnetic Resonance ImagingDose-Response Relationship, DrugGene Expression Regulation, NeoplasticMice, Inbred C57BLDNA, ViralNeoplasm StagingTomography, X-Ray ComputedBrain DiseasesArteriosclerosisTreatment OutcomeBrain