O(6)-Methylguanine-DNA MethyltransferaseGuanineMethyltransferasesDNA Modification MethylasesCarmustineDacarbazineAntineoplastic Agents, AlkylatingDNA (Cytosine-5-)-MethyltransferaseDNA Mismatch RepairDNA MethylationDNA RepairDNA Repair EnzymesMethylnitronitrosoguanidineAlkylating AgentsBase Pair MismatchMutS Homolog 2 ProteinGlioblastomaPromoter Regions, GeneticMethylationGliomaDNA-Cytosine MethylasesBrain NeoplasmsMutS DNA Mismatch-Binding ProteinSite-Specific DNA-Methyltransferase (Adenine-Specific)Polymerase Chain ReactionTumor Cells, CulturedAzacitidineAlkylationNucleic Acid HeteroduplexesDNAProtein MethyltransferasesMolecular Sequence DataBase SequencetRNA MethyltransferasesS-AdenosylmethionineDNA-Binding ProteinsHistone-Lysine N-MethyltransferaseCytosineMutationDimethylnitrosamineAdaptor Proteins, Signal TransducingColorectal Neoplasms, Hereditary NonpolyposisMethylnitrosoureaDNA DamageEscherichia coliCpG IslandsNuclear ProteinsGene SilencingEpigenesis, GeneticProtein-Arginine N-MethyltransferasesMicrosatellite RepeatsAdenosine TriphosphatasesAmino Acid SequenceSubstrate SpecificityImmunohistochemistryProtein D-Aspartate-L-Isoaspartate MethyltransferaseHistonesDNA GlycosylasesEscherichia coli ProteinsMicrosatellite InstabilityN-Glycosyl HydrolasesS-AdenosylhomocysteineDNA AdductsNitrosaminesNeoplasm ProteinsDNA Replication5-MethylcytosineCarrier ProteinsCell LineAdenineColorectal NeoplasmsDNA, NeoplasmKineticsCell Line, TumorGuanosineThymineFrameshift MutationCytidineMutagenesisProtein BindingCarcinogensSaccharomyces cerevisiaeBacterial ProteinsNitrosourea CompoundsRecombination, GeneticGerm-Line MutationMutagensPlasmidsOligonucleotidesPhenotypeRNA, MessengerDNA, BacterialDNA PrimersMonomethylhydrazineHeLa CellsCloning, MolecularTranscription, GeneticDeoxyribonucleases, Type II Site-SpecificEndodeoxyribonucleasesEnzyme Inhibitors