AbsorptionIntestinal AbsorptionSkin AbsorptionBiological AvailabilitySpectrophotometry, AtomicX-Ray Absorption SpectroscopyJejunumSpectrophotometrySpectrum AnalysisIronIntestine, SmallLightAdministration, OralZincZinc RadioisotopesPhytic AcidTime FactorsSpectrophotometry, UltravioletIron RadioisotopesZinc IsotopesIntestinesFecesDuodenumKineticsWaterSpectrometry, FluorescenceIleumCaco-2 CellsMalabsorption SyndromesHydrogen-Ion ConcentrationSitosterolsIntestinal MucosaLymphBiological TransportDietFerrous CompoundsSpectrophotometry, InfraredIron, DietarySodiumCopperCalcium, DietaryEnterocytesCross-Over StudiesRats, Sprague-DawleyPhytosterolsAzetidinesCholesterolCalciumModels, BiologicalSpectrum Analysis, RamanFluorescenceDose-Response Relationship, DrugPhotochemistryArea Under CurvePhotonsChromatography, High Pressure LiquidX-RaysBile Acids and SaltsOxidation-ReductionRabbitsTemperatureFluorescent DyesTissue DistributionBicarbonatesLasersLiverChloridesPerfusionMagnetic Resonance ImagingIsotopesFerritinsSpectrometry, X-Ray EmissionPain MeasurementReproducibility of ResultsLymphatic SystemInjections, IntravenousCircular DichroismSolubilityBileRats, WistarColonHemeHalf-LifeCattleFood, FortifiedGastrointestinal TransitHemoglobinsScattering, RadiationMicrovilliPhosphorusGlucoseXyloseSwineAnalysis of VarianceAlgorithmsCarotenoidsFoodElectron Spin Resonance SpectroscopyDigestionRats, Inbred Strains