SkinKeratinocytesUltraviolet RaysMelanocytesFibroblastsEpidermisSkin AgingSkin NeoplasmsCells, CulturedDose-Response Relationship, RadiationSkin Physiological PhenomenaSkin, ArtificialSkin DiseasesSkin PigmentationDermisSunlightSkin AbsorptionMice, HairlessCysteamineSkin TestsWound HealingMelaninsAdministration, TopicalPhotosensitizing AgentsOxidative StressPyrimidine DimersDNA DamageCell LineMelanomaKeratinsCell Line, TransformedCell SurvivalRNA, MessengerApoptosisErythemaCell DifferentiationHydrogen PeroxideHerpesvirus 1, HumanGene Expression RegulationCell ProliferationSkin UlcerSkin Diseases, BacterialDNA RepairCell DivisionCulture Media, ConditionedReactive Oxygen SpeciesImmunohistochemistryMicroscopy, FluorescenceDose-Response Relationship, DrugGene ExpressionMice, Inbred C57BLDermatitisBase SequenceSkin Physiological ProcessesDNAModels, BiologicalRabbitsAdministration, CutaneousSignal TransductionDNA PrimersCarcinoma, Basal CellStaphylococcal Skin InfectionsMutationSkin AbnormalitiesSebaceous GlandsSunscreening AgentsBlisterSkin TransplantationSkin Diseases, ViralKeratosisDermatologic Surgical ProceduresLangerhans CellsHair FollicleInjections, IntradermalSkin CreamSweat GlandsCollagenPapillomaSebumMatrix Metalloproteinase 1HairPsoriasis