Genes, p53Tumor Suppressor Protein p53Genes, p16Cyclin-Dependent Kinase Inhibitor p16Cyclin-Dependent Kinase Inhibitor p21Cyclin-Dependent Kinase Inhibitor p15Genes, Tumor SuppressorPrecancerous ConditionsMutationPolymorphism, Single-Stranded ConformationalImmunohistochemistryApoptosisCyclin-Dependent Kinase Inhibitor p57Chromosomes, Human, Pair 9Polymerase Chain ReactionMagnetic Resonance ImagingTumor Suppressor ProteinsCyclinsBase SequenceGene DeletionPromoter Regions, GeneticTumor Cells, CulturedMolecular Sequence DataDNA MethylationProto-Oncogene Proteins c-mdm2Skin NeoplasmsTime FactorsCell DivisionRNA, MessengerTomography, X-Ray ComputedGene Expression Regulation, NeoplasticNuclear ProteinsTumor Suppressor Protein p14ARFCell Cycle ProteinsCell CycleGene ExpressionCell Line, TumorCyclin-Dependent Kinase Inhibitor p27Carcinoma, Squamous CellBrain DiseasesAdenocarcinomaArteriosclerosisCell LineBiopsyLoss of HeterozygosityDNA-Binding ProteinsCarcinogensCell AgingNucleopolyhedrovirusTransfectionRetrospective StudiesGene Expression RegulationSensitivity and SpecificityProto-Oncogene ProteinsExonsTreatment OutcomeDNA PrimersCell Transformation, NeoplasticBrainDNA, NeoplasmMice, KnockoutNeoplasm ProteinsDisease Models, AnimalMice, Inbred C57BLIbotenic AcidReverse Transcriptase Polymerase Chain ReactionTranscription, GeneticSkin DiseasesProto-Oncogene Proteins c-bcl-2HyperplasiaBreast NeoplasmsLung NeoplasmsPoint MutationBlotting, WesternProto-Oncogene Proteins p21(ras)DNA Mutational AnalysisTumor Markers, BiologicalGene SilencingTranscriptional ActivationCell Proliferationbcl-2-Associated X ProteinPrognosisSkinFollow-Up StudiesCells, CulturedDNACpG IslandsAllelesAdenoviridaeMouth DiseasesGenes, rasGenes, ViralTranscription FactorsSignal TransductionMice, TransgenicUltrasonography, InterventionalApoptosis Regulatory ProteinsDisease ProgressionBreast DiseasesMice, Nude