MagnesiumIntestinal AbsorptionMagnesium DeficiencyAbsorptionIsotopesLactuloseRadioisotopesFecesMagnesium SulfateIleumDietCalciumBody WeightMagnesium CompoundsMagnesium OxideMagnesium HydroxideSpectrophotometry, AtomicBiological AvailabilitySkin AbsorptionMagnesium ChlorideJejunumZincX-Ray Absorption SpectroscopySpectrophotometryIronPhosphorusSpectrum AnalysisCalcium, DietaryAdministration, OralMineralsKineticsIntestine, SmallHydrogen-Ion ConcentrationSodiumPhytic AcidZinc RadioisotopesSpectrophotometry, UltravioletWaterIntestinesPotassiumDuodenumIron RadioisotopesZinc IsotopesCopperMalabsorption SyndromesBiological TransportElectrolytesPhosphatesMagnesium SilicatesCaco-2 CellsTrace ElementsSitosterolsTime FactorsManganeseCalcium CarbonateEdetic AcidIntestinal MucosaFerrous CompoundsIron, DietaryCations, DivalentChloridesLymphEclampsiaMineral WatersDose-Response Relationship, DrugSpectrometry, FluorescenceCross-Over StudiesTocolytic AgentsHypocalcemiaFood, FortifiedEnterocytesBiological Transport, Active