SkinKeratinocytesUltraviolet RaysMelanocytesFibroblastsEpidermisSkin NeoplasmsCells, CulturedSkin AgingDose-Response Relationship, RadiationSkin Physiological PhenomenaSkin, ArtificialDermisSkin DiseasesSkin PigmentationSkin AbsorptionSunlightMice, HairlessCysteamineMelaninsWound HealingSkin TestsAdministration, TopicalPyrimidine DimersDNA DamageErythemaOxidative StressCell LinePhotosensitizing AgentsMelanomaKeratinsCell Line, TransformedRNA, MessengerCell SurvivalSkin TransplantationApoptosisCell DifferentiationGene Expression RegulationDermatitisSkin Physiological ProcessesImmunohistochemistryHydrogen PeroxideCell ProliferationCell DivisionAdministration, CutaneousSebaceous GlandsSkin UlcerGene ExpressionHerpesvirus 1, HumanSkin Diseases, BacterialDose-Response Relationship, DrugMicroscopy, FluorescenceReactive Oxygen SpeciesDNA RepairBlisterCulture Media, ConditionedSunscreening AgentsModels, BiologicalBase SequenceLangerhans CellsCarcinoma, Basal CellDNAMice, Inbred C57BLSweat GlandsSignal TransductionInjections, IntradermalKeratosisHair FolliclePsoriasisRabbitsCollagenStaphylococcal Skin InfectionsDNA PrimersMatrix Metalloproteinase 1MutationSkin Diseases, ViralMicrobial CollagenaseSebumOrgan Culture TechniquesDermatologic Surgical ProceduresKeratolytic AgentsClobetasolSkin Abnormalities