TetrahydrofolatesFolic Acid5-Methyltetrahydrofolate-Homocysteine S-MethyltransferaseMethyltransferasesFolate Receptors, GPI-Anchored5,10-Methylenetetrahydrofolate Reductase (FADH2)DNA (Cytosine-5-)-MethyltransferaseVitamin B 12FormyltetrahydrofolatesS-AdenosylmethionineMethylenetetrahydrofolate Reductase (NADPH2)Pteroylpolyglutamic AcidsMethylationHyperhomocysteinemiaGlycine N-MethyltransferaseS-AdenosylhomocysteineMethionineHomocysteineOxidoreductases Acting on CH-NH Group DonorsProtein MethyltransferasesReduced Folate Carrier ProteinO(6)-Methylguanine-DNA MethyltransferaseBetaine-Homocysteine S-MethyltransferaseAnemia, MacrocyticVitamin B 12 DeficiencyHistone-Lysine N-MethyltransferasetRNA MethyltransferasesVitamin B ComplexMethotrexateProtein-Arginine N-MethyltransferasesFolic Acid DeficiencyHydroxocobalaminCorrinoidsDNA-Cytosine MethylasesLeucovorinProtein D-Aspartate-L-Isoaspartate MethyltransferaseDNA Modification MethylasesLeukemia L1210Site-Specific DNA-Methyltransferase (Adenine-Specific)BetaineFolic Acid AntagonistsDNA MethylationCystathionine beta-SynthasePterinsHomocystinePolyglutamic AcidDietary SupplementsFolate Receptor 1Proton-Coupled Folate TransporterNitrous OxideCarrier ProteinsPteridinesgamma-Glutamyl HydrolaseKineticsReceptors, Cell SurfaceClostridiumMethylmalonyl-CoA MutaseVitamin B 6Biological AvailabilityBiological TransportChromatography, High Pressure LiquidNeural Tube DefectsAnemia, PerniciousBiopterinCystathionineLiverMolecular Sequence DataErythrocytesPhosphatidylethanolamine N-MethyltransferaseHistonesGenotypeProtein O-MethyltransferaseGuanidinoacetate N-MethyltransferasePhosphatidyl-N-Methylethanolamine N-MethyltransferaseHomocysteine S-MethyltransferaseHomocystinuriaAcetyl Coenzyme AAmino Acid SequenceMutationAzacitidinePolymorphism, GeneticGlutamatesHomozygoteSubstrate SpecificityMethanosarcina barkeriPolycomb Repressive Complex 2Tetrahydrofolate DehydrogenaseBase SequenceMembrane Transport ProteinsMilkMethylmalonic AcidCell LineTritiumCarbon IsotopesLysineEpigenesis, GeneticCytosineGene SilencingOxidation-ReductionTime Factors