Free RadicalsFree Radical ScavengersHydroxyl RadicalElectron Spin Resonance SpectroscopyPicratesAntioxidantsHydroxidesLipid PeroxidationNitrogen OxidesOxidation-ReductionSuperoxide DismutaseOxidative StressHydrogen PeroxideReactive Oxygen SpeciesSpin LabelsXanthine OxidaseSuperoxidesCyclic N-OxidesAscorbic AcidSpin TrappingOxygenLipid PeroxidesCatalaseMalondialdehydeBiphenyl CompoundsPlant ExtractsAntipyrineProstatectomyGlutathioneDeferoxamineTioproninIronOxidantsVitamin EThiobarbituric Acid Reactive SubstancesKineticsAmidinesXanthinePhenolsSulfonic AcidsPeroxidesGlutathione PeroxidaseNitric OxideRibonucleotide ReductasesRats, WistarPulse RadiolysisAllopurinolTime FactorsMolecular StructureCopperHorseradish PeroxidasePeroxidasesBenzothiazolesModels, ChemicalRats, Sprague-Dawleytert-ButylhydroperoxideChromatography, High Pressure LiquidDNA DamageLuminescent MeasurementsSulfhydryl CompoundsDose-Response Relationship, DrugFerrous CompoundsHypoxanthineFerric CompoundsIron Chelating AgentsThioureaHydroxybenzoatesThiobarbituratesCystectomyCells, CulturedProstatic NeoplasmsCell SurvivalMitochondriaAcetylcysteineBepridilReperfusion InjuryHydrazinesPlant BarkTyrosineMastectomy, Modified RadicalPeroxidaseGalactose OxidaseElectronsRadiation-Protective AgentsChelating AgentsReactive Nitrogen SpeciesAldehydesLiverMyocardiumFlavonoidsDeoxyguanosineParaquatMelatoninMethemoglobinMetmyoglobinNitratesPyrogallolSpectrophotometryPeroxynitrous AcidMyocardial Reperfusion Injury