Cell CycleCell Cycle ProteinsGenes, cdcDNA DamageCheckpoint Kinase 2G2 PhaseCell Cycle CheckpointsMitosisProtein-Serine-Threonine KinasesCell Line, TumorAtaxia Telangiectasia Mutated ProteinsS PhaseProtein KinasesDNA RepairTumor Suppressor Protein p53HydroxyureaG2 Phase Cell Cycle CheckpointsSpindle ApparatusDNA-Binding ProteinsM Phase Cell Cycle CheckpointsTumor Suppressor ProteinsG1 PhaseNuclear ProteinsDNA ReplicationGamma RaysMutationTumor Cells, CulturedMad2 ProteinsSchizosaccharomycesSaccharomyces cerevisiae ProteinsCell DivisionFungal ProteinsPhosphorylationSchizosaccharomyces pombe ProteinsApoptosisChromosomal InstabilityRadiation, IonizingSaccharomyces cerevisiaeAtaxia TelangiectasiaCyclin-Dependent Kinase Inhibitor p21cdc25 PhosphatasesCyclinsUltraviolet RaysSignal TransductionCell LineMolecular Sequence DataRadiation ToleranceCDC2 Protein KinaseCyclin BGenes, FungalIntracellular Signaling Peptides and ProteinsCell ProliferationNeoplasmsGenomic InstabilityGene Expression Regulation, NeoplasticNeoplasm ProteinsBase SequenceG1 Phase Cell Cycle CheckpointsCell Transformation, NeoplasticFlow CytometryFibroblastsHeLa CellsCell SurvivalRetinoblastoma ProteinModels, BiologicalCyclin B1Gene DeletionDNA, FungalS Phase Cell Cycle CheckpointsGenes, p53Repressor ProteinsNocodazoleAntineoplastic AgentsPhenotypeRNA, Small InterferingDNA Breaks, Double-StrandedCells, CulturedAneuploidyTransfectionCell NucleusTumor Markers, BiologicalBRCA1 ProteinDNAHistonesRNA, MessengerGenes, Tumor SuppressorNeoplasms, ExperimentalCyclin-Dependent Kinase 2Time FactorsAmino Acid SequenceBlotting, WesternProtein BindingCDC28 Protein Kinase, S cerevisiaeCyclin EChromosomes, FungalTumor BurdenBreast NeoplasmsTranscription FactorsDNA PrimersKinetochores