Spectrum Analysis, RamanHemeMagnetic Resonance SpectroscopySchiff BasesHemeproteinsCarbon MonoxideSpectrophotometry, UltravioletSpectrum AnalysisMyoglobinHydrogen BondingProtein ConformationElectron Spin Resonance SpectroscopyMagnetic Resonance ImagingWhalesSpectrophotometryElectronsChloride PeroxidaseOxygenBacteriorhodopsinsCarotenoidsOxidation-ReductionFerrous CompoundsIronModels, Molecularalpha-GlobinsHydrogen-Ion ConcentrationHorseradish PeroxidasePhotochemistryPhotolysisXanthophyllsBinding SitesHemoglobinsMolecular StructureLigandsFerric CompoundsCopperMolecular ConformationProtonsDihydroxyphenylalanineTryptophanCircular DichroismAmine Oxidase (Copper-Containing)PeroxidasesHistidineKineticsElectron Transport Complex IVSpectroscopy, Near-InfraredWaterHorsesModels, ChemicalTemperatureElectrochemistryThermodynamicsSpectrophotometry, InfraredLasersSilverProtein BindingVibrationUltraviolet RaysCattleCrystallography, X-RayBacterial ProteinsMetal NanoparticlesHemoglobin APorphyrinsTyrosineSolutionsGoldSpectroscopy, Fourier Transform InfraredOxyhemoglobinsHalobacteriumSurface Plasmon ResonanceRetinal PigmentsScattering, RadiationChironomidaeEscherichia coliChemistry, PhysicalSpectrometry, FluorescenceDithioniteProtein Structure, SecondaryCarboxyhemoglobinSurface PropertiesNuclear Magnetic Resonance, BiomolecularPhysicochemical PhenomenaRetinaldehydeDeuteriumCytochrome a GroupQuantum TheoryMutationFiber Optic TechnologyInfrared RaysFourier AnalysisBiophysical PhenomenaBiophysicsRhodopsinNanotubesSulfurSpectroscopy, MossbauerEquipment Failure AnalysisOrganometallic Compounds