Folic AcidFolate Receptors, GPI-AnchoredReduced Folate Carrier ProteinFolic Acid DeficiencyFolate Receptor 1TetrahydrofolatesVitamin B 12Proton-Coupled Folate TransporterHomocysteinePteroylpolyglutamic AcidsVitamin B ComplexMethylenetetrahydrofolate Reductase (NADPH2)Folate Receptor 2Folic Acid Antagonistsgamma-Glutamyl HydrolaseVitamin B 6Neural Tube DefectsVitamin B 12 DeficiencyFormyltetrahydrofolatesDietary Supplements5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase4-Aminobenzoic AcidDietMethotrexateFood, FortifiedFolic Acid TransportersHyperhomocysteinemiaAnemia, MacrocyticFIGLU TestNutritional StatusErythrocytesOxidoreductases Acting on CH-NH Group DonorsLactobacillus caseiAminopterin