MagnesiumAbsorptionIntestinal AbsorptionMagnesium SulfateMagnesium DeficiencyCalcium SignalingCalcium, DietaryMagnesium CompoundsCalcium ChannelsMagnesium OxideCalcium CarbonateCalcium PhosphatesCalcium IsotopesCalcium ChlorideMagnesium HydroxideSpectrophotometry, AtomicBiological AvailabilityPhosphorusSkin AbsorptionMagnesium ChlorideCalcium RadioisotopesCalcium OxalateCalcium GluconateKineticsCalcium Channels, L-TypeZincJejunumSodiumHydrogen-Ion ConcentrationMineralsDietCalciumX-Ray Absorption SpectroscopyCalcium CompoundsSpectrophotometryPotassiumIronEgtazic AcidTime FactorsAdministration, OralParathyroid HormoneSpectrum AnalysisDose-Response Relationship, DrugIntestine, SmallHypocalcemiaCalcium Channels, N-TypeBiological TransportFecesPhytic AcidChelating AgentsCalcimycinRabbitsRats, Sprague-DawleyCalcium Channel AgonistsEdetic AcidMembrane PotentialsCations, DivalentIntestinesBiological Transport, ActiveStrontiumIleumWaterZinc RadioisotopesBone and BonesAdenosine TriphosphateSpectrophotometry, UltravioletManganeseElectrolytesRats, WistarCells, CulturedNifedipineSpectrometry, FluorescenceCopperCalcium Metabolism DisordersChloridesCalcium CitrateRats, Inbred StrainsElectron Probe MicroanalysisIron RadioisotopesS100 Calcium Binding Protein GMalabsorption SyndromesDuodenumCalcium HydroxideZinc IsotopesCattleCalcium SulfateTrace ElementsDietary SupplementsModels, BiologicalHomeostasisBinding SitesCitric AcidVerapamilFura-2Molecular Sequence DataCaco-2 CellsOsmolar ConcentrationOxalatesLanthanumKidney Calculi