BiotinAbsorptionIntestinal AbsorptionAvidinCarbon-Nitrogen LigasesStreptavidinMethylmalonyl-CoA DecarboxylaseSkin AbsorptionBiological AvailabilityPyruvate CarboxylaseSulfurtransferasesJejunumValeratesSpectrophotometry, AtomicX-Ray Absorption SpectroscopyBiotinidaseCarbon-Carbon LigasesSpectrophotometryAcetyl-CoA CarboxylaseFatty Acid Synthase, Type IIIronCarboxyl and Carbamoyl TransferasesSpectrum AnalysisPimelic AcidsIntestine, SmallKineticsAdministration, OralZincZinc RadioisotopesSpectrophotometry, UltravioletBiological TransportPhytic AcidIntestinesHoof and ClawEgg WhiteCaco-2 CellsIron RadioisotopesZinc IsotopesMultiple Carboxylase DeficiencyFecesDuodenumDietHydrogen-Ion ConcentrationChromatography, High Pressure LiquidEscherichia coliIleumSymportersIntestinal MucosaMalabsorption SyndromesSitosterolsWaterFood, FortifiedBiotinidase DeficiencyVitamin B DeficiencyLymphCarboxy-LyasesSodiumMolecular Sequence DataLigasesIron, DietaryPantothenic AcidCalcium, DietaryFerrous CompoundsEnterocytesDeficiency DiseasesProtein BindingCopperHolocarboxylase Synthetase DeficiencyLiverTissue DistributionAmino Acid SequenceBacterial ProteinsTime Factors