SkinSkin AgingSkin NeoplasmsSkin DiseasesSkin Physiological PhenomenaCyclin D1Cyclin-Dependent KinasesRNA, MessengerEpidermisSkin AbsorptionFibroblastsKeratinocytesCells, CulturedCyclin-Dependent Kinase 4Skin PigmentationCyclin-Dependent Kinase 2ImmunohistochemistryCyclin D2Cyclin-Dependent Kinase 5Ultraviolet RaysDermisSkin, ArtificialCyclinsCyclin DBlotting, WesternSkin TestsReverse Transcriptase Polymerase Chain ReactionCell Line, TumorGene Expression RegulationGene ExpressionCell CycleCDC2-CDC28 KinasesCyclin D3Cyclin-Dependent Kinase 6Gene Expression Regulation, NeoplasticErythemaCell LinePhosphorylationCell ProliferationUp-RegulationSignal TransductionDown-RegulationCDC2 Protein KinaseApoptosisMolecular Sequence DataTime FactorsGene Expression ProfilingCell Cycle ProteinsProtein-Serine-Threonine KinasesGene AmplificationCyclin-Dependent Kinase Inhibitor p27Skin TransplantationBase SequenceMelanocytesG1 PhaseNeoplasm ProteinsProto-Oncogene ProteinsGenes, bcl-1MutationTransfectionRNA, Small InterferingTumor Suppressor Protein p53DermatitisCell DivisionSunlightCell DifferentiationProteomicsPromoter Regions, GeneticCyclin-Dependent Kinase 9Skin Physiological ProcessesCarcinoma, Squamous CellCyclin ERats, Sprague-DawleyMelaninsAdministration, CutaneousSebaceous GlandsAdministration, TopicalMice, Inbred C57BLChromosomes, Human, Pair 11Tumor Markers, BiologicalTranscription, GeneticIn Situ Hybridization, FluorescenceTumor Cells, CulturedCyclin-Dependent Kinase Inhibitor p21Skin UlcerMice, HairlessWound HealingPolymerase Chain ReactionTranscription FactorsEnzyme InhibitorsTumor Suppressor ProteinsSkin Diseases, BacterialDNA-Binding ProteinsDose-Response Relationship, DrugDNA PrimersOligonucleotide Array Sequence AnalysisBlisterCell SurvivalSunscreening AgentsCollagen