AbsorptionIntestinal AbsorptionAdministration, OralBiological AvailabilitySkin AbsorptionInjections, IntravenousDose-Response Relationship, DrugDrug Administration ScheduleTime FactorsRats, Sprague-DawleyJejunumSpectrophotometry, AtomicX-Ray Absorption SpectroscopyUnited States Food and Drug AdministrationDrug Administration RoutesRats, WistarIntestine, SmallSpectrophotometryIronLiverAdministration, IntranasalArea Under CurveHalf-LifeSpectrum AnalysisIntestinesInjections, IntraperitonealCross-Over StudiesFecesZincZinc RadioisotopesDisease Models, AnimalDuodenumTissue DistributionInjections, SubcutaneousDrug InteractionsPhytic AcidAdministration, RectalRats, Inbred StrainsKineticsMice, Inbred C57BLIleumIntestinal MucosaIron RadioisotopesZinc IsotopesSpectrophotometry, UltravioletChromatography, High Pressure LiquidAdministration, TopicalInjections, IntramuscularAdministration, CutaneousCaco-2 CellsDogsInfusions, IntravenousDietRabbitsMalabsorption SyndromesWaterLymphBiological TransportSitosterolsBody WeightHydrogen-Ion ConcentrationAdministration, IntravenousBileKidneySodiumRandom AllocationDouble-Blind MethodMetabolic Clearance RateInfusions, ParenteralEnterocytesCholesterolIron, DietaryFerrous CompoundsMice, Inbred BALB CInjections, IntraventricularColonCalcium, DietaryPerfusionAnalysis of VarianceAdministration, InhalationPlant ExtractsCopperAzetidinesCalciumRecombinant ProteinsIntubation, GastrointestinalChemistry, PharmaceuticalAdministration, SublingualPhytosterolsBile Acids and SaltsGlucoseTreatment OutcomeSolubilityRNA, MessengerBrainSwineSpectrophotometry, InfraredEatingBlood PressureMice, Knockout