Thymine NucleotidesMegaloblastsThymineAnemia, MegaloblasticLeukemia, LymphoidMethotrexatePoint MutationNucleotidesMutation, MissenseMutationThymine DNA GlycosylaseMolecular Sequence DataBase SequenceFrameshift MutationAmino Acid SequenceDNAGerm-Line MutationPolymorphism, Single NucleotideEscherichia coliUracilPedigreeSequence Analysis, DNAPyrimidine DimersCloning, MolecularAdenine NucleotidesPolymerase Chain ReactionExonsNucleic Acid ConformationDeoxyribonuclease (Pyrimidine Dimer)GenotypeAllelesAmino Acid SubstitutionMutation RateGuanine NucleotidesDNA Mutational AnalysisBinding SitesBromouracilHeterozygoteDNA RepairCytosineModels, MolecularKineticsPentoxylMutagenesis, Site-DirectedDNA, BacterialMutagenesisCodonPurine NucleotidesDNA PrimersOsmium TetroxidePlasmidsSequence Homology, Amino AcidUltraviolet RaysTranscription, GeneticSequence AlignmentOligodeoxyribonucleotidesPolymorphism, Single-Stranded ConformationalCell LineGenesChromosome MappingAdenineGenes, BacterialEndodeoxyribonucleasesBacterial ProteinsProtein BindingProtein Structure, TertiaryDNA-Binding ProteinsSequence Homology, Nucleic AcidSequence DeletionHomozygotePyrimidine NucleotidesRNA, MessengerGenetic VariationThymidineCodon, NonsenseOligonucleotidesPhenotypeRestriction MappingGuanine Nucleotide Exchange FactorsPromoter Regions, GeneticPhylogenyBase PairingSubstrate SpecificityGuanineBase Pair MismatchDNA ReplicationNucleotides, CyclicModels, GeneticAdenosine TriphosphateSaccharomyces cerevisiaeBase CompositionPotassium PermanganateGenes, RecessiveTranscription FactorsGenetic Complementation TestGenetic Predisposition to DiseaseDNA, ViralEscherichia coli ProteinsPolymorphism, GeneticStructure-Activity Relationship