Cell CycleCell Cycle ProteinsGenes, cdcCheckpoint Kinase 2DNA DamageG2 PhaseCell Cycle CheckpointsMitosisProtein-Serine-Threonine KinasesAtaxia Telangiectasia Mutated ProteinsS PhaseProtein KinasesDNA RepairG2 Phase Cell Cycle CheckpointsHydroxyureaSpindle ApparatusM Phase Cell Cycle CheckpointsG1 PhaseDNA-Binding ProteinsNuclear ProteinsDNA ReplicationTumor Suppressor Protein p53Gamma RaysMad2 ProteinsSchizosaccharomycesSaccharomyces cerevisiae ProteinsTumor Suppressor ProteinsFungal ProteinsSchizosaccharomyces pombe ProteinsMutationSaccharomyces cerevisiaeAtaxia Telangiectasiacdc25 PhosphatasesRadiation, IonizingCyclinsChromosomal InstabilityCyclin-Dependent Kinase Inhibitor p21PhosphorylationCDC2 Protein KinaseUltraviolet RaysCyclin BGenes, FungalCell DivisionRadiation ToleranceApoptosisIntracellular Signaling Peptides and ProteinsG1 Phase Cell Cycle CheckpointsGenomic InstabilityMolecular Sequence DataCyclin B1DNA, FungalS Phase Cell Cycle CheckpointsCell Line, TumorCell LineSignal TransductionNocodazoleRetinoblastoma ProteinHeLa CellsDNA Breaks, Double-StrandedFibroblastsGene DeletionMenstrual CycleBase SequenceModels, BiologicalCyclin-Dependent Kinase 2AneuploidyFlow CytometryRepressor ProteinsBRCA1 ProteinCDC28 Protein Kinase, S cerevisiaeHistonesChromosomes, FungalCell ProliferationGenes, p53Cell NucleusTumor Cells, CulturedCyclin EDNAPhenotypeKinetochoresNeoplasm ProteinsCyclin-Dependent KinasesMimosineCell SurvivalCDC2-CDC28 KinasesDNA Repair EnzymesCells, CulturedMethyl MethanesulfonateCyclin AAmino Acid SequenceRNA, Small InterferingGene Expression Regulation, NeoplasticProtein BindingCalcium-Binding ProteinsCyclin-Dependent Kinase Inhibitor p27CaffeineTime FactorsAllelesAphidicolinCyclin D1