OxygenCell HypoxiaAnoxiaOxygen ConsumptionIon-Selective ElectrodesHypoxia-Inducible Factor 1, alpha SubunitConfined SpacesReactive Oxygen SpeciesPartial PressureHyperoxiaHypoxia-Inducible Factor 1AnaerobiosisEtanidazoleMagnetic Resonance ImagingAerobiosisHypoxia, BrainCarbon DioxideAtmosphereProcollagen-Proline DioxygenaseFetal HypoxiaAdaptation, PhysiologicalOxygen Inhalation TherapyBrainGillsOxidation-ReductionSinglet OxygenBrain MappingRespirationImage Processing, Computer-AssistedModels, BiologicalOxidative StressCells, CulturedOceans and SeasBasic Helix-Loop-Helix Transcription FactorsCerebrovascular CirculationTime FactorsMitochondriaRats, Sprague-DawleyWoodMicroelectrodesRetinal VesselsHemoglobinsEnergy MetabolismVascular Endothelial Growth Factor ACell SurvivalSignal TransductionRNA, MessengerMicrocirculationHydrogen-Ion ConcentrationCell Line, TumorAltitudeGene Expression RegulationOxygen IsotopesRestNitric OxideCell Culture TechniquesTranscription FactorsHyperbaric OxygenationGene Expression Regulation, BacterialNeovascularization, PhysiologicRetinaBiological EvolutionTemperatureBacterial ProteinsLightBlood Gas AnalysisNitroimidazolesCell ProliferationImage Interpretation, Computer-AssistedImmunohistochemistryMolecular Sequence DataHydrogen PeroxideChemoreceptor CellsOximetryPulmonary ArteryHypercapniaCulture MediaAltitude SicknessMutationCell DifferentiationPulmonary VentilationCobaltAntioxidantsOxyhemoglobinsMisonidazoleAnimals, NewbornSuperoxide DismutaseRats, WistarPulmonary CirculationFree Radical ScavengersAcclimatizationAtmospheric PressureApoptosisFree RadicalsNADPH OxidaseLungCatalaseRespiratory MechanicsHeart RateLactic Acid