Cell CycleMitosisCell Cycle ProteinsCell Cycle CheckpointsInterphaseG1 PhaseCell DivisionCDC2 Protein KinaseS PhaseG2 PhaseCyclinsSpindle ApparatusHeLa CellsNocodazoleProtein-Serine-Threonine KinasesPhosphorylationG2 Phase Cell Cycle CheckpointsApoptosisCyclin BMeiosisMenstrual CycleCell ProliferationCentrosomeTelophaseCyclin-Dependent Kinase Inhibitor p27Nuclear ProteinsRetinoblastoma ProteinCell NucleusCell LineDNA ReplicationMolecular Sequence DataCell Line, TumorCyclin-Dependent Kinase Inhibitor p21Cyclin B1DNA-Binding ProteinsG0 PhaseDNA DamageSaccharomyces cerevisiaeMutationTumor Suppressor Protein p53MicrotubulesGenes, cdcCyclin-Dependent Kinase 2Cyclin AMetaphaseFlow CytometryChromosomesCyclin EAnaphaseSaccharomyces cerevisiae ProteinsG1 Phase Cell Cycle Checkpointscdc25 PhosphatasesSignal TransductionCells, CulturedTumor Suppressor ProteinsTime FactorsMicrotubule-Associated ProteinsAmino Acid SequenceCyclin D1SchizosaccharomycesTranscription FactorsDipodomysModels, BiologicalFungal ProteinsProtein KinasesDNATumor Cells, CulturedTranscription, GeneticUbiquitin-Protein Ligase ComplexesBase SequenceCyclin-Dependent Kinase 4ProphaseRNA, MessengerAnaphase-Promoting Complex-CyclosomeHistonesBromodeoxyuridineGene Expression RegulationCell DifferentiationProtein BindingMicroscopy, FluorescenceCell SurvivalSchizosaccharomyces pombe ProteinsTubulinAurora KinasesChromosome SegregationCDC2-CDC28 KinasesBlotting, WesternM Phase Cell Cycle CheckpointsEstrous CycleRNA InterferenceFluorescent Antibody TechniqueE2F Transcription FactorsGenes, FungalRecombinant Fusion ProteinsFibroblastsCytokinesisPolyploidyRNA, Small InterferingDemecolcineTransfection