Cell CycleG2 Phase Cell Cycle CheckpointsS Phase Cell Cycle CheckpointsG1 Phase Cell Cycle CheckpointsCell Cycle ProteinsM Phase Cell Cycle CheckpointsG2 PhaseCell Cycle CheckpointsS PhaseG1 PhaseDNA DamageCheckpoint Kinase 2MitosisGenes, cdcProtein-Serine-Threonine KinasesAtaxia Telangiectasia Mutated ProteinsTumor Suppressor Protein p53Cyclin-Dependent Kinase Inhibitor p21cdc25 PhosphatasesCyclinsProtein KinasesCell DivisionCDC2 Protein KinaseDNA RepairApoptosisPhosphorylationDNA-Binding ProteinsCell Line, TumorTumor Suppressor ProteinsCyclin B1DNA ReplicationCell ProliferationNuclear ProteinsRetinoblastoma ProteinCyclin BGamma RaysHydroxyureaG0 PhaseCyclin-Dependent Kinase 2Ataxia TelangiectasiaFlow CytometryRadiation, IonizingCyclin-Dependent Kinase Inhibitor p27Cell LineSpindle ApparatusSignal TransductionHeLa CellsCyclin D1MutationCyclin ERadiation ToleranceSaccharomyces cerevisiae ProteinsCell SurvivalSaccharomyces cerevisiaeCyclin-Dependent KinasesUltraviolet RaysTumor Cells, CulturedGenomic InstabilitySchizosaccharomycesCyclin-Dependent Kinase 4NocodazoleFibroblastsMolecular Sequence DataModels, BiologicalCells, CulturedRNA, Small InterferingSchizosaccharomyces pombe ProteinsCell NucleusBlotting, WesternHistonesInterphaseDNACyclin AFungal ProteinsCDC2-CDC28 KinasesDNA Breaks, Double-StrandedAntineoplastic AgentsMimosineAntineoplastic Agents, PhytogenicChromosomal InstabilityTranscription FactorsMenstrual CycleBRCA1 ProteinAmino Acid SequenceTime FactorsGenes, p53Protein BindingAphidicolinGene Expression Regulation, NeoplasticAllyl CompoundsBase SequenceKinetochoresIntracellular Signaling Peptides and ProteinsBromodeoxyuridineDose-Response Relationship, RadiationCarrier ProteinsProliferating Cell Nuclear AntigenGene Expression RegulationTranscription, GeneticDose-Response Relationship, Drug