Cell Cycle ProteinsCell CycleReplication Protein CDNA DamageCheckpoint Kinase 2Genes, cdcG2 PhaseProliferating Cell Nuclear AntigenCell Cycle CheckpointsMitosisProtein-Serine-Threonine KinasesAtaxia Telangiectasia Mutated ProteinsS PhaseM Phase Cell Cycle CheckpointsProtein KinasesSpindle ApparatusG2 Phase Cell Cycle CheckpointsDNA RepairHydroxyureaDNA ReplicationNuclear ProteinsDNA-Binding ProteinsG1 PhaseSchizosaccharomycesSchizosaccharomyces pombe ProteinsSaccharomyces cerevisiae ProteinsTumor Suppressor Protein p53Gamma RaysMutationTumor Suppressor ProteinsFungal ProteinsSaccharomyces cerevisiaecdc25 PhosphatasesPhosphorylationRadiation, IonizingMad2 ProteinsChromosomal InstabilityAtaxia TelangiectasiaCDC2 Protein KinaseUltraviolet RaysCyclin BS Phase Cell Cycle CheckpointsCyclin-Dependent Kinase Inhibitor p21CyclinsGenes, FungalGenomic InstabilityKinetochoresIntracellular Signaling Peptides and ProteinsNocodazoleRadiation ToleranceCell DivisionApoptosisG1 Phase Cell Cycle CheckpointsDNA, FungalMolecular Sequence DataCyclin B1HeLa CellsDNA Breaks, Double-StrandedSignal TransductionCell LineCell Line, TumorModels, BiologicalGene DeletionAneuploidyFibroblastsRepressor ProteinsRetinoblastoma ProteinMethyl MethanesulfonateHistonesBRCA1 ProteinBase SequenceCdc20 ProteinsFlow CytometryCDC28 Protein Kinase, S cerevisiaeCyclin-Dependent Kinase 2DNAChromosome SegregationCalcium-Binding ProteinsCell NucleusMetaphasePhenotypeGenes, p53Protein BindingDNA Repair EnzymesTumor Cells, CulturedRNA, Small InterferingCell SurvivalCell ProliferationExonucleasesAmino Acid SequenceCaffeineAphidicolinNeoplasm ProteinsAnaphaseCyclin-Dependent KinasesCells, CulturedCyclin EChromosomes, FungalNucleic Acid Synthesis InhibitorsCentrosome