Thymine NucleotidesMegaloblastsThymineAnemia, MegaloblasticLeukemia, LymphoidMethotrexateNucleotidesThymine DNA GlycosylaseMolecular Sequence DataBase SequenceDNAUracilPolymorphism, Single NucleotidePyrimidine DimersAdenine NucleotidesAmino Acid SequenceDeoxyribonuclease (Pyrimidine Dimer)Guanine NucleotidesEscherichia coliBromouracilNucleic Acid ConformationMutationPentoxylCloning, MolecularPurine NucleotidesDNA RepairCytosineOsmium TetroxideUltraviolet RaysKineticsThymidineDNA, BacterialEndodeoxyribonucleasesPyrimidine NucleotidesDNA DamageAdenineOligodeoxyribonucleotidesGuanineSequence Analysis, DNAGuanine Nucleotide Exchange FactorsNucleotides, CyclicCell LineBinding SitesTranscription, GeneticSequence Homology, Nucleic AcidDNA ReplicationPotassium PermanganateOligonucleotides