Cell CycleS Phase Cell Cycle CheckpointsG2 Phase Cell Cycle CheckpointsG1 Phase Cell Cycle CheckpointsM Phase Cell Cycle CheckpointsCell Cycle ProteinsG2 PhaseCell Cycle CheckpointsDNA DamageS PhaseCheckpoint Kinase 2G1 PhaseGenes, cdcMitosisEukaryotic CellsAtaxia Telangiectasia Mutated ProteinsProtein-Serine-Threonine KinasesTumor Suppressor Protein p53Protein Kinasescdc25 PhosphatasesDNA RepairDNA-Binding ProteinsCyclin-Dependent Kinase Inhibitor p21PhosphorylationCDC2 Protein KinaseCyclinsCell DivisionApoptosisDNA ReplicationTumor Suppressor ProteinsCell Line, TumorCyclin B1Nuclear ProteinsGamma RaysHydroxyureaSaccharomyces cerevisiaeMolecular Sequence DataAtaxia TelangiectasiaHeLa CellsSaccharomyces cerevisiae ProteinsCell ProliferationRadiation, IonizingCyclin BCell LineMutationSpindle ApparatusSignal TransductionRetinoblastoma ProteinFlow CytometryCyclin-Dependent Kinase 2Radiation ToleranceG0 PhaseColony Count, MicrobialCyclin-Dependent KinasesSchizosaccharomycesAmino Acid SequenceGenomic InstabilityUltraviolet RaysCyclin-Dependent Kinase Inhibitor p27Cyclin ECyclin D1Models, BiologicalCell SurvivalFungal ProteinsNocodazoleSchizosaccharomyces pombe ProteinsCell NucleusFibroblastsDNATumor Cells, CulturedHistonesBase SequenceRNA, Small InterferingBlotting, WesternDNA Breaks, Double-StrandedProtein BindingCells, CulturedCyclin-Dependent Kinase 4Chromosomal InstabilityAntineoplastic Agents, PhytogenicSoil MicrobiologyGeologic SedimentsAntineoplastic AgentsBRCA1 ProteinTranscription FactorsMimosineInterphaseCDC2-CDC28 KinasesAllyl CompoundsKinetochoresCarrier ProteinsAphidicolinGenes, p53Cyclin ASequence Homology, Amino AcidChromatinIntracellular Signaling Peptides and ProteinsRNA, MessengerTime FactorsTranscription, Genetic