ThymineCytosineUracilSulfitesGuanineDNABase SequenceNucleic Acid ConformationDNA MethylationThymine DNA GlycosylaseCytosine DeaminaseBase PairingModels, Molecular5-MethylcytosineDNA-Cytosine MethylasesDeaminationDeoxyribonuclease (Pyrimidine Dimer)Thymine NucleotidesPyrimidine DimersPentoxylBase CompositionOsmium TetroxideBromouracilAdenineCytarabineMolecular Sequence DataFlucytosineOligodeoxyribonucleotidesBase Pair MismatchEscherichia coliDNA RepairEndodeoxyribonucleasesThymidineDNA GlycosylasesN-Glycosyl HydrolasesNucleoside DeaminasesCytosine NucleotidesPotassium PermanganateDNA (Cytosine-5-)-MethyltransferaseOligonucleotidesUracil-DNA GlycosidaseCytidineSkull BaseUltraviolet RaysDNA, BacterialNucleosidesSchiff BasesMutationNucleic Acid DenaturationOsmiumMethylationSubstrate SpecificityDNA DamageKineticsDNA ReplicationHydrogen BondingPyrimidine Nucleosides2-AminopurineCpG IslandsBinding SitesDNA-Directed DNA PolymeraseNucleotidesDeoxyriboseDeoxyuridinePurinesAmino Acid SequenceNucleic Acid HeteroduplexesDeoxyribodipyrimidine Photo-LyaseDeoxyribonucleosidesTritiumPolydeoxyribonucleotidesDNA-(Apurinic or Apyrimidinic Site) LyaseCytidine DeaminaseUridineMagnetic Resonance SpectroscopyProdrugsDeoxyguanosinePlasmidsDNA, ViralGuanosinePhotochemistryDeoxycytidine MonophosphateMolecular StructureMutagenesisEscherichia coli ProteinsDNA, Single-StrandedTranscription, GeneticNucleobase Transport ProteinsSequence Analysis, DNATemplates, GeneticDeoxyribonucleases, Type II Site-SpecificSkull Base NeoplasmsChromatography, High Pressure LiquidPyrimidinesPromoter Regions, GeneticDeoxyribonucleotidesColiphagesCloning, MolecularDeoxyuracil NucleotidesDNA Adducts