Cell CycleDNA DamageCell Cycle ProteinsGenes, cdcCheckpoint Kinase 2Dose-Response Relationship, RadiationG2 PhaseCell Cycle CheckpointsRadiation, IonizingMitosisRadiation ToleranceGamma RaysProtein-Serine-Threonine KinasesRadiation-Protective AgentsX-RaysDNA RepairAtaxia Telangiectasia Mutated ProteinsRadiation DosageS PhaseRadiationProtein KinasesRadiation InjuriesRadiation Injuries, ExperimentalUltraviolet RaysHydroxyureaG2 Phase Cell Cycle CheckpointsSpindle ApparatusM Phase Cell Cycle CheckpointsDNA-Binding ProteinsG1 PhaseNuclear ProteinsTumor Suppressor Protein p53DNA ReplicationAbnormalities, Radiation-InducedRadiation EffectsRadiation-Sensitizing AgentsTumor Suppressor ProteinsMad2 ProteinsSynchrotronsSaccharomyces cerevisiae ProteinsSchizosaccharomycesMutationSchizosaccharomyces pombe ProteinsFungal ProteinsAtaxia TelangiectasiaSaccharomyces cerevisiaecdc25 PhosphatasesChromosomal Instabilitybeta-Aminoethyl IsothioureaApoptosisPhosphorylationCell SurvivalCyclin-Dependent Kinase Inhibitor p21CyclinsCDC2 Protein KinaseGenes, FungalCyclin BCell DivisionDNAIntracellular Signaling Peptides and ProteinsGenomic InstabilityCell LineCobalt RadioisotopesTime FactorsAquifoliaceaeMolecular Sequence DataCrystallography, X-RayG1 Phase Cell Cycle CheckpointsCell Line, TumorDNA Breaks, Double-StrandedDNA, FungalSignal TransductionCyclin B1S Phase Cell Cycle CheckpointsHeLa CellsFibroblastsNocodazoleElectromagnetic RadiationWhole-Body IrradiationCells, CulturedGene DeletionRetinoblastoma ProteinModels, BiologicalBase SequenceProteinsCrystallizationBRCA1 ProteinAneuploidyFlow CytometryRepressor ProteinsHistonesCyclin-Dependent Kinase 2CDC28 Protein Kinase, S cerevisiaeX-Ray DiffractionGenes, p53NeoplasmsTumor Cells, CulturedChromosomes, FungalRadiation ProtectionCell Proliferation