Ascorbic AcidIronGastric AcidIntestinal AbsorptionAbsorptionIron IsotopesIron RadioisotopesIron, DietaryIron Chelating AgentsFerritinsAscorbic Acid DeficiencyPhytic AcidFerrous CompoundsBiological AvailabilityHepcidinsIron OverloadAnemia, Iron-DeficiencyHemochromatosisDuodenumAnemia, HypochromicFood, FortifiedFerric CompoundsPentagastrinAntimicrobial Cationic PeptidesHemoglobinsTransferrinIron CompoundsCation Transport ProteinsIron-Binding ProteinsGastric JuiceHemosiderinDehydroascorbic AcidGastrinsDietFood AnalysisScurvyEnterocytesGastric Acidity DeterminationGastric MucosaBreadReceptors, TransferrinGrape Seed ExtractCaco-2 CellsPhenylhydrazinesPhlebotomyBloodlettingAntioxidantsIron Metabolism DisordersPolyphenolsMeatHeme6-PhytaseEdetic AcidLiverStomachNutritional StatusSoybeansFlourIron Regulatory Protein 1Cross-Over StudiesFoodIron-Regulatory ProteinsHydrogen-Ion ConcentrationParietal Cells, GastricDeferoxamineZincIntestinesAchlorhydriaAdministration, OralHematocritWhole-Body CountingVegetable ProteinsIntestinal MucosaTeaErythropoiesisIron Regulatory Protein 2Infant FoodBethanechol CompoundsL-Gulonolactone OxidaseCitrus aurantiifoliaCopperHydrolyzable TanninsDigitariaSecretory RateTriticumCerealsSkin AbsorptionDose-Response Relationship, DrugDysprosiumMilkHistamineDietary SupplementsBiological TransportRats, Mutant StrainsOxidation-ReductionHistamine H2 AntagonistsFood AdditivesZinc IsotopesFecesDietary Proteins