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 TransductionG2 PhaseDNA ReplicationChromosome BreakageMicrocephalyUltraviolet RaysHeterozygoteX-RaysChromosome AberrationsApoptosisInfrared RaysGenes, cdcNucleic Acid Synthesis InhibitorsReplication Protein ACell Line, TumorS PhaseCell Line, TransformedDNA Repair EnzymesGenomic InstabilityCell SurvivalCells, CulturedLymphocytesG2 Phase Cell Cycle CheckpointsTelomereAphidicolinTelomeric Repeat Binding Protein 2Mice, KnockoutIron-Binding ProteinsCell Cycle CheckpointsDNAPhenotypeCardiac Output, HighHydroxyureaActivin Receptors, Type IMorpholinesMutation, MissenseComet AssayHeLa CellsChromosome DisordersHomozygoteBleomycinCaffeineAlkylating AgentsCerebellumChromosomes, Human, Pair 11SerineProteinsSyndromeImmunologic Deficiency SyndromesIntracellular Signaling Peptides and ProteinsRNA, Small InterferingMolecular Sequence DataDNA LigasesCell AgingG1 PhaseMice, 129 StrainRNA InterferenceBase SequencePedigreeChromosomal Proteins, Non-HistoneCell Nucleus