PyrimidinesPyrimidine NucleotidesPyrimidine DimersPyrimidine NucleosidesCytosine DeaminaseUracilDeoxyribonuclease (Pyrimidine Dimer)5-MethylcytosineDNA-Cytosine MethylasesPyrimidine PhosphorylasesDeaminationCytidineOrotic AcidUltraviolet RaysPurinesCytarabineThymineDNAOrotate PhosphoribosyltransferaseCytosine NucleotidesUridineFlucytosineBase SequenceDihydroorotaseDeoxyribodipyrimidine Photo-LyasePurine NucleotidesNucleoside DeaminasesNucleosidesAspartate CarbamoyltransferaseSulfitesDNA MethylationCarbamoyl-Phosphate Synthase (Glutamine-Hydrolyzing)Orotidine-5'-Phosphate DecarboxylasePentosyltransferasesGuanineUridine PhosphorylaseDNA RepairMolecular Sequence DataAdenineUracil NucleotidesUridine KinaseDihydroorotate OxidaseNucleic Acid ConformationDeoxyuridinePurine NucleosidesDNA (Cytosine-5-)-MethyltransferaseUridine MonophosphateDeoxyribonucleosidesEscherichia coliN-Glycosyl HydrolasesUridine TriphosphateNucleotidesBase PairingCytidine TriphosphateKineticsMethylationOligodeoxyribonucleotidesOligonucleotidesMutationDNA DamageSubstrate SpecificityDNA GlycosylasesPurine-Pyrimidine Metabolism, Inborn ErrorsBase CompositionThymidineDeoxycytosine NucleotidesEndodeoxyribonucleasesNucleobase Transport ProteinsCytidine DeaminaseGuanosineCpG IslandsRibonucleosidesThiamineCarbamyl PhosphateDeoxycytidine MonophosphateMolecular StructureModels, MolecularOxidoreductases Acting on CH-CH Group DonorsProdrugsAzauridineCytosineStructure-Activity RelationshipDNA, BacterialHydrogen BondingBinding SitesPolydeoxyribonucleotidesUracil-DNA GlycosidaseAmino Acid SequencePhosphonoacetic AcidRibonucleotidesDihydrouracil Dehydrogenase (NADP)Cell LineAntimetabolites, AntineoplasticNucleotidasesPhosphoribosyl Pyrophosphate5'-NucleotidaseTranscription, GeneticMagnetic Resonance SpectroscopyMicrococcusFloxuridine