OxygenMicroscopy, ElectronElectronsElectron TransportMicroscopy, Electron, ScanningOxygen ConsumptionReactive Oxygen SpeciesMicroscopy, Electron, TransmissionElectron Spin Resonance SpectroscopyOxygen Inhalation TherapySinglet OxygenOxidation-ReductionOxygen IsotopesMicroscopy, Electron, Scanning TransmissionElectron Transport Complex IVElectron Probe MicroanalysisHyperbaric OxygenationHydrogen PeroxideKineticsMitochondriaPartial PressureFree RadicalsElectron Transport Complex IIIOxidative StressAnoxiaOxidoreductasesOximetryPhotosynthesisSpectrophotometryModels, MolecularElectron Transport Chain Complex ProteinsTime FactorsCarbon DioxideHydrogen-Ion ConcentrationAntioxidantsMolecular Sequence DataSpin LabelsElectron Transport Complex ICytochromesCytochrome c GroupSuperoxide DismutaseSuperoxidesHemeFree Radical ScavengersCatalaseLightHemoglobinsOxyhemoglobinsCells, CulturedNADPH OxidasePhotosynthetic Reaction Center Complex ProteinsModels, BiologicalCryoelectron MicroscopyProtein ConformationBacterial ProteinsUbiquinoneFerricyanidesTemperatureAerobiosisMicroscopy, ImmunoelectronCell HypoxiaSpectrum AnalysisCell MembraneEscherichia coliHyperoxiaAmino Acid SequenceIronPhotosystem II Protein ComplexCyclic N-OxidesPolarographyModels, ChemicalChlorophyllFerredoxinsWaterCattleHydrogenAntimycin ANADNADH, NADPH OxidoreductasesPhotosystem I Protein ComplexMutationAnaerobiosisIron-Sulfur ProteinsRabbitsNADPElectrochemistryEnergy MetabolismBlood Gas AnalysisFlavinsRhodobacter sphaeroidesBinding SitesProtonsLuminescent MeasurementsCopperRats, Sprague-DawleyNitric OxideHistocytochemistryElectron Transport Complex IIFreeze FracturingCell Line