Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinRepetitive Sequences, Nucleic AcidIron-Binding ProteinsAllelesMolecular Sequence DataMachado-Joseph DiseaseBase SequenceMutationSpinocerebellar AtaxiasGenes, PlantHeredodegenerative Disorders, Nervous SystemGenomic InstabilityMicrosatellite RepeatsNerve Tissue ProteinsNucleic Acid ConformationDNAFlap EndonucleasesMinisatellite RepeatsAnticipation, GeneticInverted Repeat SequencesTandem Repeat SequencesChromosome FragilityPedigreeCerebellar AtaxiaIntranuclear Inclusion BodiesAge of OnsetGenetic Diseases, InbornPolymerase Chain ReactionMuscular Dystrophy, OculopharyngealRNA-Binding ProteinsPolymorphism, GeneticNeurodegenerative DiseasesFrontotemporal DementiaNuclear ProteinsDNA RepairReceptors, AndrogenSequence Analysis, DNAPeptidesPhenotypeModels, GeneticNucleic Acid HeteroduplexesProteinsMice, TransgenicDNA PrimersTranscription, GeneticDNA ReplicationGenome, HumanGenotypeSaccharomyces cerevisiaeMutS Homolog 2 ProteinChromosomes, Human, XGenetic MarkersGenes, DominantExonsAmyotrophic Lateral SclerosisHeterozygoteDinucleotide RepeatsAmino Acid SequenceDNA, SatelliteGene FrequencyDNA-Binding ProteinsRNA, MessengerRepetitive Sequences, Amino AcidSaccharomyces cerevisiae ProteinsOligodeoxyribonucleotidesChromosome MappingGenetic VariationDisease Models, AnimalNucleic Acid DenaturationSequence DeletionRNAEndodeoxyribonucleasesX ChromosomeRecombination, GeneticNervous System DiseasesCell LineDNA Mutational AnalysisHaplotypesGenetic TestingProtein-Serine-Threonine KinasesBlotting, SouthernAnkyrin RepeatBrain