UracilUracil-DNA GlycosidaseUracil NucleotidesN-Glycosyl HydrolasesDNA GlycosylasesNucleotide Transport ProteinsDeoxyuracil NucleotidesBromouracilPentosyltransferasesThymineUracil MustardUridine MonophosphateBase SequenceCytosineDeaminationDNATranscription, GeneticGene Expression RegulationUridineDihydrouracil Dehydrogenase (NADP)Uridine PhosphorylaseProtein BiosynthesisMolecular Sequence DataReverse Transcriptase Polymerase Chain ReactionTegafurArabinofuranosyluracilThiouracilAmino Acid SequenceDihydropyrimidine Dehydrogenase DeficiencyDNA RepairBlotting, NorthernRNA StabilityEscherichia coliThymine DNA GlycosylaseCloning, MolecularCell LineKineticsMutationCells, CulturedPyrimidine NucleosidesDeoxyuridineOrotidine-5'-Phosphate DecarboxylaseOrotate PhosphoribosyltransferaseDNA PrimersOrotic AcidIn Situ HybridizationPolymerase Chain ReactionRNA, MessengerRNA-Binding ProteinsPyrimidinesCytidine DeaminaseRNANucleic Acid Hybridization3' Untranslated RegionsPyrophosphatasesGene Expression Regulation, EnzymologicLiverSulfitesRNA, BacterialAdenineDNA, ComplementaryNucleic Acid ConformationSubstrate SpecificityFolic Acid DeficiencyPoly ABlotting, WesternPentoxylPlasmidsPromoter Regions, GeneticFluorouracilHydroxyphenylazouracilDNA-(Apurinic or Apyrimidinic Site) LyasePyrimidine NucleotidesCytidine