AbsorptionIntestinal AbsorptionPositron-Emission TomographyOtoacoustic Emissions, SpontaneousTomography, Emission-ComputedSkin AbsorptionBiological AvailabilityVehicle EmissionsFluorodeoxyglucose F18Spectrophotometry, AtomicRadiopharmaceuticalsX-Ray Absorption SpectroscopyJejunumTomography, Emission-Computed, Single-PhotonSpectrometry, FluorescenceSpectrophotometrySpectrum AnalysisIronGreenhouse EffectIntestine, SmallFluorine RadioisotopesZincSpectrophotometry, UltravioletCarbon RadioisotopesAdministration, OralZinc RadioisotopesSpectrometry, X-Ray EmissionPhytic AcidWaterKineticsIron RadioisotopesZinc IsotopesMethaneCarbon FootprintAir PollutantsIntestinesDuodenumFecesHydrogen-Ion ConcentrationTime FactorsIleumVolatilizationCaco-2 CellsMalabsorption SyndromesPhotonsSitosterolsAtmosphereFluorescenceMultimodal ImagingTissue DistributionBiological TransportEnvironmental MonitoringFluorescent DyesPentanesDietLightIntestinal MucosaLymphTomography, X-Ray ComputedBrainCopperSpectrophotometry, InfraredIron, DietaryRadioisotopesCalcium, DietaryFerrous CompoundsEnterocytesAzetidinesSodiumCarbon DioxidePhotochemistryTemperatureGlucoseSensitivity and SpecificityLuminescenceEnergy TransferGasolineChromatography, High Pressure LiquidPhytosterolsFossil FuelsModels, BiologicalCholesterolGasesArea Under CurveCross-Over StudiesCircular DichroismCalciumLuminescent MeasurementsNitrous OxideOxidation-ReductionPower PlantsVolatile Organic CompoundsPerfusionCoalModels, TheoreticalDenitrificationRats, Sprague-DawleyX-RaysMagnetic Resonance ImagingBile Acids and Salts