Proton-Coupled Folate TransporterReduced Folate Carrier ProteinFolic AcidFolate Receptors, GPI-AnchoredFolate Receptor 1Folic Acid AntagonistsMembrane Transport ProteinsFolic Acid TransportersProtonsTetrahydrofolatesMalabsorption SyndromesMethotrexateAminopterinFolate Receptor 2Folic Acid DeficiencyCarrier ProteinsBiological TransportUricosuric AgentsProton PumpsGlutamatesHydrogen-Ion ConcentrationPteroylpolyglutamic AcidsAnion Transport ProteinsATP-Binding Cassette TransportersReceptors, Cell SurfaceLeukemia L1210Molecular Sequence DataVitamin B 12Polyglutamic AcidFormyltetrahydrofolatesGuanineHeLa CellsHomocysteineAmino Acid SequenceIntestinal AbsorptionMethylenetetrahydrofolate Reductase (NADPH2)TransfectionKineticsPhosphoribosylaminoimidazolecarboxamide FormyltransferasePhosphoribosylglycinamide FormyltransferaseOrganic Anion TransportersCHO CellsThymidylate SynthaseVitamin B ComplexCricetinaeMembrane ProteinsTrimetrexate5-Methyltetrahydrofolate-Homocysteine S-MethyltransferaseCarrier StateProton Pump InhibitorsSymportersAntimetabolites, AntineoplasticLeucovoringamma-Glutamyl HydrolaseGlucose Transporter Type 1Monosaccharide Transport ProteinsCell MembraneMonocarboxylic Acid TransportersSerotonin Plasma Membrane Transport ProteinsBase SequenceMutationPolymorphism, GeneticThiamineVitamin B 6ThiophenesDopamine Plasma Membrane Transport ProteinsDrug CarriersLeukemia, T-CellRNA, MessengerNeural Tube DefectsVitamin B 12 DeficiencyGenotypeTumor Cells, CulturedMagnetic Resonance SpectroscopyExcitatory Amino Acid Transporter 2Excitatory Amino Acid Transporter 3Thiamine MonophosphateDietary SupplementsAmino Acid Transport System X-AGDNA, ComplementaryModels, MolecularDrug Resistance, NeoplasmDNA PrimersDietErythrocytesOrganic Cation Transporter 1Excitatory Amino Acid Transporter 14-Aminobenzoic Acid