Cell CycleCell Cycle ProteinsCheckpoint Kinase 2S PhaseG1 PhaseMitosisDisease ProgressionCell Cycle CheckpointsG2 PhaseProtein-Serine-Threonine KinasesGenes, cdcDNA DamageCyclinsM Phase Cell Cycle CheckpointsCell DivisionRetinoblastoma ProteinPhosphorylationCell ProliferationCyclin-Dependent KinasesG2 Phase Cell Cycle CheckpointsCyclin-Dependent Kinase Inhibitor p27Cyclin-Dependent Kinase Inhibitor p21Cyclin-Dependent Kinase 2Protein KinasesCDC2 Protein KinaseNuclear ProteinsCell Line, TumorApoptosisDNA ReplicationDNA-Binding ProteinsCyclin D1Spindle ApparatusCyclin BSignal TransductionCyclin Ecdc25 PhosphatasesTumor Suppressor Protein p53Tumor Suppressor ProteinsCyclin AMutationCell LineSaccharomyces cerevisiae ProteinsCDC2-CDC28 KinasesE2F Transcription FactorsCyclin-Dependent Kinase 4Cyclin B1HeLa CellsS Phase Cell Cycle CheckpointsAtaxia Telangiectasia Mutated ProteinsMolecular Sequence DataSaccharomyces cerevisiaeE2F1 Transcription FactorFlow CytometryHydroxyureaG0 PhaseSchizosaccharomycesTranscription FactorsKinetochoresSchizosaccharomyces pombe ProteinsG1 Phase Cell Cycle CheckpointsNocodazoleCells, CulturedTumor Cells, CulturedCell NucleusRNA, Small InterferingModels, BiologicalBlotting, WesternCyclin DAmino Acid SequenceTime FactorsProtein BindingFungal ProteinsDNA RepairCell SurvivalUbiquitin-Protein Ligase ComplexesGene Expression RegulationRNA, MessengerAnaphase-Promoting Complex-CyclosomeInterphaseDown-RegulationGene Expression Regulation, NeoplasticTransfectionDNATranscription Factor DP1FibroblastsTranscription, GeneticBase SequenceRNA InterferenceCarrier ProteinsHistonesChromosome SegregationProto-Oncogene ProteinsCdc20 ProteinsAnaphaseBromodeoxyuridineRetinoblastoma-Binding Protein 1Microtubule-Associated ProteinsMimosineAntineoplastic AgentsEnzyme Inhibitors