S Phase Cell Cycle CheckpointsCell CycleG2 Phase Cell Cycle CheckpointsCell Cycle ProteinsCheckpoint Kinase 2M Phase Cell Cycle CheckpointsS PhaseG1 Phase Cell Cycle CheckpointsG2 PhaseDNA DamageAtaxia Telangiectasia Mutated ProteinsCell Cycle CheckpointsGenes, cdcProtein-Serine-Threonine KinasesG1 PhaseMitosisProtein KinasesDNA Replicationcdc25 PhosphatasesHydroxyureaDNA-Binding ProteinsDNA RepairTumor Suppressor ProteinsPhosphorylationRadiation, IonizingNuclear ProteinsTumor Suppressor Protein p53Ataxia TelangiectasiaCDC2 Protein KinaseCyclin-Dependent Kinase Inhibitor p21Saccharomyces cerevisiae ProteinsSpindle ApparatusCell Line, TumorCyclinsCyclin B1Cell DivisionApoptosisSaccharomyces cerevisiaeMutationHeLa CellsGamma RaysCyclin BCell LineAphidicolinCell ProliferationNocodazoleSignal TransductionSchizosaccharomycesChromosomal Proteins, Non-HistoneRadiation ToleranceKinetochoresRetinoblastoma ProteinNaphthalimidesGenomic InstabilitySchizosaccharomyces pombe ProteinsFlow CytometryCyclin-Dependent Kinase 2Ultraviolet RaysModels, BiologicalG0 PhaseCyclin-Dependent KinasesDNA Breaks, Double-StrandedDNA, FungalCyclin ECell SurvivalCyclin D1Cyclin-Dependent Kinase Inhibitor p27Chromosomal InstabilityFungal ProteinsFibroblastsRNA, Small InterferingHistonesTumor Cells, CulturedMolecular Sequence DataBlotting, WesternCell NucleusDNABRCA1 ProteinReplication OriginMethyl MethanesulfonateCdc20 ProteinsIntracellular Signaling Peptides and ProteinsCells, CulturedCyclin-Dependent Kinase 4Antineoplastic Agents, PhytogenicAntineoplastic AgentsChromosome SegregationMimosineMetaphaseGenes, p53InterphaseProtein BindingCDC2-CDC28 KinasesDose-Response Relationship, RadiationCyclin AAmino Acid SequenceDNA Repair EnzymesAllyl CompoundsCaffeineAnaphase