SkinKeratinocytesUltraviolet RaysMelanocytesFibroblastsEpidermisMadagascarCentral African RepublicFranceSkin NeoplasmsNeutron DiffractionCells, CulturedSkin AgingDose-Response Relationship, RadiationEmbryo, MammalianSkin Physiological PhenomenaEmbryo, NonmammalianChick EmbryoSkin, ArtificialBreast NeoplasmsDermisSkin DiseasesSkin PigmentationEmbryo ImplantationRetrospective StudiesBlastocystSkin AbsorptionEmbryonic DevelopmentSunlightMice, HairlessCysteamineWound HealingMelaninsEmbryo LossGene Expression Regulation, DevelopmentalEmbryonic and Fetal DevelopmentSkin TestsPregnancyRNA, MessengerAdministration, TopicalCell LineFertilization in VitroPyrimidine DimersCleavage Stage, OvumBlastomeresSea LionsDNA DamageCell DifferentiationOxidative StressBase SequenceErythemaPhotosensitizing AgentsKeratinsMelanomaCell Line, TransformedImmunohistochemistryCell SurvivalTime FactorsGene ExpressionMolecular Sequence DataCell DivisionEmbryo DispositionApoptosis