Cell CycleApoptosisCaenorhabditis elegansCaenorhabditis elegans ProteinsCell Cycle ProteinsHelminth ProteinsCell Cycle CheckpointsDNA DamageG2 PhaseCheckpoint Kinase 2Genes, HelminthGenes, cdcMitosisS PhaseProtein-Serine-Threonine KinasesAtaxia Telangiectasia Mutated ProteinsG1 PhaseG2 Phase Cell Cycle CheckpointsTumor Suppressor Protein p53Molecular Sequence DataDNA RepairProtein KinasesDNA-Binding ProteinsTumor Suppressor ProteinsCysteine EndopeptidasesCyclinsCell DivisionNuclear ProteinsPhosphorylationCyclin-Dependent Kinase Inhibitor p21MutationDNA ReplicationM Phase Cell Cycle Checkpointscdc25 PhosphatasesCell Line, TumorGamma RaysSignal TransductionCDC2 Protein KinaseCyclin BRadiation, IonizingHydroxyureaSpindle ApparatusAtaxia TelangiectasiaCell LineG1 Phase Cell Cycle CheckpointsCell ProliferationRadiation ToleranceRetinoblastoma ProteinFlow CytometryHeLa CellsCell SurvivalTumor Cells, CulturedModels, BiologicalCyclin B1Saccharomyces cerevisiae ProteinsGenomic InstabilityCells, CulturedSchizosaccharomycesS Phase Cell Cycle CheckpointsFibroblastsSaccharomyces cerevisiaeAmino Acid SequenceCyclin-Dependent Kinase 2Cell NucleusNocodazoleRNA InterferenceUltraviolet RaysSchizosaccharomyces pombe ProteinsRNA, Small InterferingDNACyclin ECyclin-Dependent Kinase Inhibitor p27DNA Breaks, Double-StrandedHistonesCaspasesBlotting, WesternTime FactorsBase SequenceFungal ProteinsProtein BindingTranscription FactorsAntineoplastic AgentsGenes, p53Enzyme ActivationApoptosis Regulatory ProteinsGene Expression RegulationChromosomal InstabilityIntracellular Signaling Peptides and ProteinsCyclin ACaspase 3CDC2-CDC28 KinasesTransfectionCyclin D1Carrier ProteinsProto-Oncogene Proteins c-bcl-2RNA, MessengerMenstrual CycleProto-Oncogene ProteinsPhenotypeBRCA1 Protein