Cell CycleCell Cycle ProteinsGenes, cdcCheckpoint Kinase 2DNA DamageG2 PhaseCell Cycle CheckpointsMitosisProtein-Serine-Threonine KinasesAtaxia Telangiectasia Mutated ProteinsS PhaseProtein KinasesDNA RepairHydroxyureaSpindle ApparatusG2 Phase Cell Cycle CheckpointsM Phase Cell Cycle CheckpointsG1 PhaseDNA-Binding ProteinsNuclear ProteinsDNA ReplicationTumor Suppressor Protein p53Gamma RaysMad2 ProteinsSaccharomyces cerevisiae ProteinsSchizosaccharomycesMutationTumor Suppressor ProteinsFungal ProteinsSchizosaccharomyces pombe ProteinsSaccharomyces cerevisiaeAtaxia TelangiectasiaChromosomal Instabilitycdc25 PhosphatasesRadiation, IonizingPhosphorylationUltraviolet RaysCyclinsCyclin-Dependent Kinase Inhibitor p21CDC2 Protein KinaseGenes, FungalCyclin BGenomic InstabilityRadiation ToleranceCell DivisionIntracellular Signaling Peptides and ProteinsMolecular Sequence DataApoptosisG1 Phase Cell Cycle CheckpointsDNA, FungalCell LineCyclin B1S Phase Cell Cycle CheckpointsCell Line, TumorSignal TransductionHeLa CellsNocodazoleBase SequenceDNA Breaks, Double-StrandedFibroblastsGene DeletionRetinoblastoma ProteinModels, BiologicalDrug StabilityAneuploidyRepressor ProteinsBRCA1 ProteinFlow CytometryCDC28 Protein Kinase, S cerevisiaeCyclin-Dependent Kinase 2HistonesChromosomes, FungalDNAProtein StabilityGenes, p53PhenotypeKinetochoresCell NucleusTumor Cells, CulturedAmino Acid SequenceCell ProliferationNeoplasm ProteinsProtein BindingCyclin ECell SurvivalDNA Repair EnzymesMethyl MethanesulfonateMimosineCells, CulturedRNA, Small InterferingCDC2-CDC28 KinasesGene Expression Regulation, NeoplasticCalcium-Binding ProteinsCyclin-Dependent KinasesEnzyme StabilityCaffeineCyclin AAllelesAphidicolinTime Factors