OncogenesCell Transformation, NeoplasticCarcinogensCarcinogenesisGenes, rasCocarcinogenesis9,10-Dimethyl-1,2-benzanthracenePrecancerous ConditionsAzoxymethanePapillomaGene Expression Regulation, NeoplasticSkin NeoplasmsRats, Inbred F344Anticarcinogenic AgentsMethylnitrosoureaNeoplasmsColonic NeoplasmsNeoplasms, ExperimentalCarcinogenicity TestsGenes, Tumor SuppressorProto-OncogenesGenes, mycMammary Neoplasms, ExperimentalOncogene Proteins, Viral1,2-DimethylhydrazineCell Line, TumorCell DivisionAdenocarcinomaNitrosaminesLiver Neoplasms, ExperimentalNeoplasms, Radiation-InducedCarcinoma, Squamous CellMutationStomach NeoplasmsTumor Suppressor Protein p53DNA, NeoplasmAdenomaPapillomavirus E7 ProteinsApoptosisCell ProliferationSignal TransductionProto-Oncogene Proteins c-mycImmunohistochemistryMice, TransgenicRNA, MessengerLung Neoplasms4-Nitroquinoline-1-oxideMethylnitronitrosoguanidineCell Line, TransformedGenes, p53DiethylnitrosamineProto-Oncogene Proteins p21(ras)ButylhydroxybutylnitrosamineColorectal NeoplasmsCarcinogens, EnvironmentalDimethylhydrazinesCarcinomaMesocricetusProto-Oncogene ProteinsGene AmplificationDNA MethylationLiver NeoplasmsBase SequenceCell Transformation, ViralHyperplasiaOncogene Protein p21(ras)Benzo(a)pyreneCell LineKeratinocytesReverse Transcriptase Polymerase Chain ReactionMouth NeoplasmsTransfectionDNA DamagePapillomaviridaeTumor Cells, CulturedNeoplasm ProteinsGene Expression ProfilingTumor Markers, BiologicalOncogene Proteins v-rafUterine Cervical NeoplasmsMicroRNAsEpithelial CellsOncogene Protein p55(v-myc)Oncogene ProteinsDisease Models, AnimalCyclooxygenase 2ChemopreventionDNA-Binding ProteinsPolymerase Chain ReactionDisease ProgressionBreast NeoplasmsOligonucleotide Array Sequence AnalysisColonUrinary Bladder Neoplasmsras ProteinsRNA, NeoplasmPromoter Regions, GeneticRetroviridaeMolecular Sequence DataTumor Suppressor Proteins