UracilThyminePyrimidinesPyrimidine DimersPyrimidine NucleotidesPyrimidine NucleosidesThymine DNA GlycosylaseUracil-DNA GlycosidaseDeoxyribonuclease (Pyrimidine Dimer)BromouracilN-Glycosyl HydrolasesUracil NucleotidesDNA GlycosylasesCytosineUltraviolet RaysThymine NucleotidesDNADNA RepairUridineOrotic AcidOrotate PhosphoribosyltransferasePentosyltransferasesDeoxyribodipyrimidine Photo-LyasePentoxylPurinesPyrimidine PhosphorylasesDeoxyuracil NucleotidesUridine PhosphorylaseThymidineNucleosidesEscherichia coliNucleotide Transport ProteinsBase SequenceEndodeoxyribonucleasesUridine MonophosphateOrotidine-5'-Phosphate DecarboxylaseAdenineDeoxyuridineCytidineDihydrouracil Dehydrogenase (NADP)Osmium TetroxideDeaminationDNA DamageNucleic Acid ConformationAspartate CarbamoyltransferaseDihydroorotaseDeoxyribonucleosidesGuanineMolecular Sequence DataCarbamoyl-Phosphate Synthase (Glutamine-Hydrolyzing)OligodeoxyribonucleotidesKineticsPotassium PermanganateOligonucleotidesUridine KinasePurine NucleotidesMutationSubstrate SpecificityNucleotidesPurine Nucleosides5-MethylcytosineArabinofuranosyluracilDNA, BacterialDihydroorotate OxidaseUridine TriphosphateDeoxycytidine MonophosphateDNA ReplicationFloxuridineBase PairingBase Pair MismatchRibonucleosidesThymidine MonophosphateUracil MustardModels, MolecularDNA-(Apurinic or Apyrimidinic Site) LyaseDihydropyrimidine Dehydrogenase DeficiencyDNA-Directed DNA PolymeraseTritiumThiouracilNucleic Acid HeteroduplexesMolecular StructureBase CompositionPhotochemistryRadiation Effects