Cell CycleS Phase Cell Cycle CheckpointsG2 Phase Cell Cycle CheckpointsG2 PhaseG1 Phase Cell Cycle CheckpointsM Phase Cell Cycle CheckpointsCell Cycle ProteinsG1 PhaseCell Cycle CheckpointsS PhaseDNA DamageCheckpoint Kinase 2Genes, cdcMitosisAtaxia Telangiectasia Mutated ProteinsProtein-Serine-Threonine KinasesTumor Suppressor Protein p53Cell DivisionPhosphorylationProtein Kinasescdc25 PhosphatasesCell Line, TumorCyclin-Dependent Kinase Inhibitor p21DNA RepairCyclinsCDC2 Protein KinaseDNA-Binding ProteinsApoptosisTumor Suppressor ProteinsCyclin B1Gene Products, vprDNA ReplicationNuclear ProteinsGamma RaysHydroxyureaAtaxia TelangiectasiaCell ProliferationRadiation, IonizingCyclin BRetinoblastoma ProteinSpindle ApparatusFlow CytometryG0 PhaseCyclin-Dependent Kinase 2Radiation ToleranceSignal TransductionCell LineHeLa CellsMutationCyclin-Dependent KinasesCyclin-Dependent Kinase Inhibitor p27Cyclin D1Cyclin EGenomic InstabilityUltraviolet RaysSaccharomyces cerevisiae ProteinsCell SurvivalSaccharomyces cerevisiaeNocodazoleSchizosaccharomycesTumor Cells, CulturedFibroblastsSchizosaccharomyces pombe ProteinsCyclin-Dependent Kinase 4RNA, Small InterferingModels, BiologicalDNA Breaks, Double-StrandedHistonesMolecular Sequence DataBlotting, WesternMenstrual CycleChromosomal InstabilityCells, CulturedCell NucleusAntineoplastic Agents, PhytogenicFungal ProteinsDNAAntineoplastic AgentsMimosineBRCA1 ProteinInterphaseCDC2-CDC28 KinasesAllyl CompoundsCyclin AGenes, p53KinetochoresTranscription FactorsAphidicolinAmino Acid SequenceTime FactorsProtein BindingGene Expression Regulation, NeoplasticIntracellular Signaling Peptides and ProteinsDose-Response Relationship, RadiationDNA Repair EnzymesMethyl MethanesulfonateBase SequenceDose-Response Relationship, DrugCaffeineCarrier Proteins