SkinKeratinocytesUltraviolet RaysMelanocytesFibroblastsEpidermisCloning, MolecularSkin NeoplasmsCells, CulturedSkin AgingDose-Response Relationship, RadiationEmbryo, MammalianEmbryo, NonmammalianSkin Physiological PhenomenaChick EmbryoSkin, ArtificialDermisSkin DiseasesBase SequenceSkin PigmentationMolecular Sequence DataEmbryo ImplantationAmino Acid SequenceBlastocystSkin AbsorptionEmbryonic DevelopmentSunlightRNA, MessengerMice, HairlessCloning, OrganismDNA, ComplementaryCysteamineCell LineGene Expression Regulation, DevelopmentalSequence Homology, Amino AcidWound HealingMelaninsEmbryonic and Fetal DevelopmentEmbryo LossGene ExpressionSkin TestsAdministration, TopicalDNAFertilization in VitroCleavage Stage, OvumCell DifferentiationBlastomeresPyrimidine DimersPregnancyDNA DamageOxidative StressErythemaMutationDNA PrimersPhotosensitizing AgentsGene Expression RegulationKeratinsIn Situ HybridizationMelanomaCell Line, TransformedImmunohistochemistryCell DivisionCell SurvivalZebrafishApoptosisSequence AlignmentEmbryo DispositionMorula