Cell CycleS Phase Cell Cycle CheckpointsG2 Phase Cell Cycle CheckpointsG1 Phase Cell Cycle CheckpointsM Phase Cell Cycle CheckpointsCell Cycle ProteinsG2 PhaseCell Cycle CheckpointsDNA DamageCheckpoint Kinase 2S PhaseProtein-Serine-Threonine KinasesG1 PhaseProtein KinasesGenes, cdcMitosisAtaxia Telangiectasia Mutated ProteinsTumor Suppressor Protein p53CDC2 Protein KinasePhosphorylationCyclin-Dependent Kinase Inhibitor p21cdc25 PhosphatasesDNA RepairDNA-Binding ProteinsApoptosisCyclinsCell DivisionCell Line, TumorTumor Suppressor ProteinsCyclin B1DNA ReplicationNuclear ProteinsGamma RaysCell ProliferationCyclin-Dependent KinasesSignal TransductionAtaxia TelangiectasiaHydroxyureaRadiation, IonizingCyclin-Dependent Kinase 2Cyclin BMutationCell LineSpindle ApparatusRetinoblastoma ProteinHeLa CellsPhosphatidylinositol 3-KinasesFlow CytometryRadiation ToleranceG0 PhaseCyclin-Dependent Kinase Inhibitor p27Saccharomyces cerevisiae ProteinsCell SurvivalUltraviolet RaysCyclin ETumor Cells, CulturedGenomic InstabilitySaccharomyces cerevisiaeCyclin D1MAP Kinase Signaling SystemProtein Kinase InhibitorsBlotting, WesternFibroblastsMolecular Sequence DataSchizosaccharomycesCDC2-CDC28 KinasesNocodazoleRNA, Small InterferingCyclin-Dependent Kinase 4Models, BiologicalCells, CulturedSchizosaccharomyces pombe ProteinsCell NucleusHistonesDNA Breaks, Double-StrandedProtein BindingDNAFungal ProteinsIntracellular Signaling Peptides and ProteinsAntineoplastic AgentsChromosomal InstabilityAntineoplastic Agents, PhytogenicAmino Acid SequenceBRCA1 ProteinMimosineTranscription FactorsCalcium-Calmodulin-Dependent Protein KinasesTransfectionBase SequenceInterphaseTime FactorsAllyl CompoundsProto-Oncogene ProteinsProtein-Tyrosine KinasesCyclin AGenes, p53KinetochoresEnzyme ActivationDose-Response Relationship, DrugGene Expression Regulation, Neoplastic