Cell CycleS Phase Cell Cycle CheckpointsG2 Phase Cell Cycle CheckpointsM Phase Cell Cycle CheckpointsG1 Phase Cell Cycle CheckpointsCell Cycle ProteinsCheckpoint Kinase 2G2 PhaseCell Cycle CheckpointsDNA DamageS PhaseGenes, cdcG1 PhaseMitosisProtein-Serine-Threonine KinasesAtaxia Telangiectasia Mutated ProteinsProtein KinasesTumor Suppressor Protein p53cdc25 PhosphatasesDNA RepairDNA-Binding ProteinsPhosphorylationCDC2 Protein KinaseCyclin-Dependent Kinase Inhibitor p21Spindle ApparatusDNA ReplicationTumor Suppressor ProteinsHydroxyureaCyclinsNuclear ProteinsCyclin B1Cell DivisionApoptosisCell Line, TumorGamma RaysCyclin BRadiation, IonizingAtaxia TelangiectasiaSaccharomyces cerevisiae ProteinsCell ProliferationHeLa CellsMutationNocodazoleSignal TransductionSchizosaccharomycesRadiation ToleranceKinetochoresRetinoblastoma ProteinGenomic InstabilitySchizosaccharomyces pombe ProteinsFlow CytometryCell LineSaccharomyces cerevisiaeCyclin-Dependent Kinase 2Ultraviolet RaysG0 PhaseCyclin-Dependent KinasesDNA Breaks, Double-StrandedCyclin ECell SurvivalCyclin D1Cyclin-Dependent Kinase Inhibitor p27Chromosomal InstabilityFungal ProteinsFibroblastsRNA, Small InterferingHistonesModels, BiologicalTumor Cells, CulturedMolecular Sequence DataBlotting, WesternCell NucleusDNABRCA1 ProteinMethyl MethanesulfonateCdc20 ProteinsIntracellular Signaling Peptides and ProteinsCells, CulturedCyclin-Dependent Kinase 4Antineoplastic Agents, PhytogenicAphidicolinAntineoplastic AgentsChromosome SegregationMimosineMetaphaseGenes, p53InterphaseProtein BindingCDC2-CDC28 KinasesDose-Response Relationship, RadiationCyclin AAmino Acid SequenceDNA Repair EnzymesAllyl CompoundsCaffeineAnaphaseTranscription FactorsChromatinNucleic Acid Synthesis InhibitorsDNA, Fungal