Ataxia TelangiectasiaAtaxia Telangiectasia Mutated ProteinsTelangiectasisTelangiectasia, Hereditary HemorrhagicAtaxiaTumor Suppressor ProteinsCerebellar AtaxiaCell Cycle ProteinsProtein-Serine-Threonine KinasesRetinal TelangiectasisFriedreich AtaxiaDNA-Binding ProteinsDNA DamageSpinocerebellar AtaxiasRadiation, IonizingCheckpoint Kinase 2DNA RepairGait AtaxiaGamma RaysRadiation ToleranceTumor Suppressor Protein p53DNA Breaks, Double-StrandedDNA-Activated Protein KinaseEpistaxisPhosphorylationPyronesActivin Receptors, Type IIArteriovenous MalformationsHistonesNuclear ProteinsFibroblastsMutationDose-Response Relationship, RadiationCell CycleNijmegen Breakage SyndromeStreptonigrinCREST SyndromeCell LineProtein KinasesSignal TransductionDNA ReplicationG2 PhaseChromosome BreakageMicrocephalyHeterozygoteUltraviolet RaysApoptosisX-RaysChromosome AberrationsInfrared RaysGenes, cdcNucleic Acid Synthesis InhibitorsCell Line, TumorReplication Protein AS PhaseCell Line, TransformedDNA Repair EnzymesCell SurvivalCells, CulturedGenomic InstabilityLymphocytesG2 Phase Cell Cycle CheckpointsPhenotypeSyndromeMice, KnockoutTelomereAphidicolinTelomeric Repeat Binding Protein 2Iron-Binding ProteinsDNACell Cycle CheckpointsHydroxyureaMutation, MissenseMorpholinesCardiac Output, HighActivin Receptors, Type IHomozygoteCerebellumComet AssayChromosome DisordersHeLa CellsBleomycinCaffeineAlkylating AgentsChromosomes, Human, Pair 11SerineProteinsImmunologic Deficiency SyndromesIntracellular Signaling Peptides and ProteinsMolecular Sequence DataRNA, Small InterferingPedigreeDNA LigasesCell AgingBase SequenceMice, 129 StrainG1 PhaseRNA InterferenceTime FactorsChromosomal Proteins, Non-Histone