Cell CycleDNA DamageS Phase Cell Cycle CheckpointsG2 Phase Cell Cycle CheckpointsG1 Phase Cell Cycle CheckpointsM Phase Cell Cycle CheckpointsCell Cycle ProteinsG2 PhaseCell Cycle CheckpointsCheckpoint Kinase 2S PhaseG1 PhaseAtaxia Telangiectasia Mutated ProteinsGenes, cdcProtein-Serine-Threonine KinasesMitosisDNA RepairTumor Suppressor Protein p53Protein KinasesDNA-Binding Proteinscdc25 PhosphatasesCyclin-Dependent Kinase Inhibitor p21Tumor Suppressor ProteinsPhosphorylationApoptosisCDC2 Protein KinaseCell Line, TumorCyclinsGamma RaysDNA ReplicationCell DivisionNuclear ProteinsCyclin B1HydroxyureaUltraviolet RaysAtaxia TelangiectasiaCell ProliferationRadiation, IonizingRadiation ToleranceCyclin BCell LineSignal TransductionHeLa CellsMutationGenomic InstabilitySpindle ApparatusRetinoblastoma ProteinFlow CytometryDNA Breaks, Double-StrandedCyclin-Dependent Kinase 2G0 PhaseSaccharomyces cerevisiae ProteinsCell SurvivalComet AssayHistonesSaccharomyces cerevisiaeCyclin-Dependent KinasesFibroblastsCyclin-Dependent Kinase Inhibitor p27Cyclin D1Cyclin EDNASchizosaccharomycesTumor Cells, CulturedNocodazoleRNA, Small InterferingSchizosaccharomyces pombe ProteinsCells, CulturedModels, BiologicalBRCA1 ProteinBlotting, WesternCell NucleusMolecular Sequence DataMethyl MethanesulfonateChromosomal InstabilityAntineoplastic AgentsDose-Response Relationship, RadiationFungal ProteinsCyclin-Dependent Kinase 4DNA Repair EnzymesAntineoplastic Agents, PhytogenicGenes, p53Intracellular Signaling Peptides and ProteinsMimosineProtein BindingMutagensInterphaseTime FactorsAphidicolinTranscription FactorsAllyl CompoundsCDC2-CDC28 KinasesAmino Acid SequenceChromatinCyclin AKinetochoresGene Expression Regulation, NeoplasticDose-Response Relationship, DrugNucleic Acid Synthesis InhibitorsBase Sequence