OxygenNitrate ReductaseOxygen ConsumptionReactive Oxygen SpeciesNitrate Reductase (NADH)Silver NitrateOxygen Inhalation TherapySinglet OxygenNitrate Reductase (NAD(P)H)ChloratesAnion Transport ProteinsOxidation-ReductionNitrogenOxygen IsotopesNitric OxideMolybdenumQuaternary Ammonium CompoundsNitroglycerinIsosorbide DinitrateHyperbaric OxygenationGalliumPartial PressureOxidative StressPotassium CompoundsPlant RootsPentaerythritol TetranitrateAnoxiaHydrogen PeroxideOxidoreductasesFertilizersDenitrificationOximetryCarbon DioxideMolecular Sequence DataNitric AcidElectron TransportNitrogen CompoundsKineticsAntioxidantsNitrous OxideHydrogen-Ion ConcentrationOxyhemoglobinsNitrate Reductase (NADPH)Time FactorsAmmoniaFree Radical ScavengersSuperoxide DismutaseCulture MediaCatalaseDrug ToleranceHemoglobinsFree RadicalsChlorellaMutationGene Expression Regulation, BacterialBacterial ProteinsMitochondriaNitrogen IsotopesSuperoxidesEscherichia coliPteridinesWater Pollutants, ChemicalAerobiosisNADPH OxidaseTungsten CompoundsCell HypoxiaHyperoxiaCarbonElectron Spin Resonance SpectroscopyCytochromesSoilAnaerobiosisXanthine OxidaseVasodilator AgentsFormatesHydroponicsCoenzymesBlood Gas AnalysisOperonReactive Nitrogen SpeciesSpectrophotometryPlant LeavesMethemoglobinemiaNitric Oxide SynthaseRNA, Ribosomal, 16SNitrogen FixationParacoccus denitrificansPlant ShootsNitroso CompoundsArabidopsisSodium NitritePhylogenyLuminescent MeasurementsPeriplasmNitric Oxide DonorsOxidantsWaterEnergy MetabolismCyanobacteriaModels, Biological