Ultraviolet RaysSpectrophotometrySpectrophotometry, AtomicSpectrophotometry, UltravioletUltraviolet TherapySpectrophotometry, InfraredSpectrum AnalysisRadiation EffectsPUVA TherapyColorChromatography, High Pressure LiquidErythemaKineticsSpectrometry, FluorescenceSunscreening AgentsOxidation-ReductionTabletsCalibrationZincMicroscopy, UltravioletMicrochemistrySunlightGraphiteOxyhemoglobinsDose-Response Relationship, RadiationHydrogen-Ion ConcentrationLightIndicators and ReagentsCopperMethodsMagnetic Resonance SpectroscopyColoring AgentsSkinColorimetryTime FactorsChromatography, Thin LayerMice, HairlessReproducibility of ResultsTemperatureIndocyanine GreenAluminumMethemoglobinChemistryBilirubinChemical PhenomenaLeadMass SpectrometryMelaninsDithioniteTrace ElementsPyrimidine DimersRadiation GeneticsSkin PigmentationSunburnDensitometryCircular DichroismFlow Injection AnalysisBlood Volume DeterminationMolecular StructureElectron Spin Resonance SpectroscopyMethoxsalenMagnesium CompoundsMercuryAutoanalysisMagnesiumWaterOxygenSkin NeoplasmsNeoplasms, Radiation-InducedPotassium IodideDrug StabilitySolutionsIronPotassium CompoundsHemoglobinsChromiumMetals, HeavyHydrochloric AcidMicrospectrophotometryRetinal PigmentsPhotochemistryDNADNA RepairCarboxyhemoglobinEscherichia coliSpectroscopy, Near-InfraredSpectrum Analysis, RamanSpinal PunctureBoratesCadmiumFluorescenceModels, ChemicalBaccharisCattleAbsorptionFerric CompoundsPhotosensitivity DisordersSkin AgingNickelKeratinocytes