AbsorptionIntestinal AbsorptionSkin AbsorptionBiological AvailabilitySpectrophotometry, AtomicJejunumX-Ray Absorption SpectroscopySpectrophotometryAdministration, OralIronIntestine, SmallSpectrum AnalysisZincZinc RadioisotopesDrug Administration RoutesPhytic AcidIron RadioisotopesIntestinesZinc IsotopesFecesSpectrophotometry, UltravioletDuodenumIleumCaco-2 CellsMalabsorption SyndromesKineticsSitosterolsIntestinal MucosaWaterLymphInjections, IntravenousHydrogen-Ion ConcentrationDietBiological TransportIron, DietaryFerrous CompoundsEnterocytesCalcium, DietarySodiumCopperTime FactorsSpectrophotometry, InfraredAzetidinesPhytosterolsCholesterolArea Under CurveChromatography, High Pressure LiquidCross-Over StudiesBileTissue DistributionBile Acids and SaltsLymphatic SystemHalf-LifeLightRats, Sprague-DawleyBicarbonatesCalciumChloridesPerfusionFerritinsModels, BiologicalOxidation-ReductionSpectrometry, FluorescenceSolubilityIntubation, GastrointestinalMolecular StructureX-RaysColonFood, FortifiedSpectrometry, X-Ray EmissionInjections, SubcutaneousGastrointestinal TransitInjections, IntramuscularMicrovilliIsotopesHemePhotochemistryBiological Transport, ActiveXyloseGlucoseDigestionLiverCarbon RadioisotopesCalcium CarbonateRats, WistarAdministration, CutaneousPhosphorusFood-Drug InteractionsTrioleinDigestive SystemFoodAdministration, IntranasalPharmacokineticsCholesterol, DietaryRats, Inbred StrainsAmino AcidsMannitolHemoglobinsCircular DichroismDose-Response Relationship, Drug