Rats, Inbred F344CarcinogensCarcinogenesisCell Transformation, NeoplasticCocarcinogenesis9,10-Dimethyl-1,2-benzanthracenePrecancerous ConditionsAzoxymethaneAnticarcinogenic AgentsPapillomaSkin NeoplasmsMethylnitrosoureaColonic NeoplasmsCarcinogenicity TestsF Factor1,2-DimethylhydrazineNeoplasms, ExperimentalF2-IsoprostanesNitrosaminesGene Expression Regulation, NeoplasticMammary Neoplasms, ExperimentalStomach NeoplasmsAdenocarcinomaAdenoma4-Nitroquinoline-1-oxideNeoplasms, Radiation-InducedLiver Neoplasms, ExperimentalDiethylnitrosamineCarcinoma, Squamous CellNeoplasmsCarcinogens, EnvironmentalButylhydroxybutylnitrosamineDimethylhydrazinesMethylnitronitrosoguanidineBenzo(a)pyreneGenes, rasImmunohistochemistryMesocricetusColorectal NeoplasmsHyperplasiaCell Line, TumorApoptosisMouth NeoplasmsLiver NeoplasmsColonDNA MethylationChemopreventionCyclooxygenase 2Lung NeoplasmsRNA, MessengerCell ProliferationCarcinomaMice, TransgenicIntestinal NeoplasmsCell DivisionSignal TransductionProstaglandins FMutagensDNA AdductsAzaserineTumor Suppressor Protein p53DNA DamageKeratinocytesUrinary Bladder NeoplasmsReverse Transcriptase Polymerase Chain ReactionUrethaneTumor Markers, Biological2-AcetylaminofluoreneMutationGenes, Tumor SuppressorDietLiverEsophageal NeoplasmsMice, Inbred SENCARDisease Models, AnimalFluorodeoxyglucose F18Time FactorsGenes, p53DNA, NeoplasmDisease ProgressionEpithelial CellsMutagenicity TestsGastric MucosaUltraviolet RaysMice, HairlessPancreatic NeoplasmsBenz(a)AnthracenesMammary Neoplasms, Animalbeta CateninIntestinal MucosaProstatic NeoplasmsCarcinoma, HepatocellularMethylhydrazinesNeoplasm ProteinsSkinCarcinoma in SituDNA-Binding ProteinsTetradecanoylphorbol AcetateUterine Cervical NeoplasmsDimethylnitrosamine