Cell CycleInterphaseCell Cycle ProteinsMitosisCell Cycle CheckpointsG1 PhaseS PhaseCell DivisionCyclinsG2 PhaseMenstrual CycleCDC2 Protein KinaseCell NucleusApoptosisCyclin-Dependent Kinase Inhibitor p21Cell ProliferationCyclin-Dependent Kinase Inhibitor p27Retinoblastoma ProteinG2 Phase Cell Cycle CheckpointsPhosphorylationHeLa CellsProtein-Serine-Threonine KinasesCell LineNuclear ProteinsCell Line, TumorCyclin BMolecular Sequence DataG0 PhaseDNA ReplicationTumor Suppressor Protein p53Cyclin-Dependent Kinase 2G1 Phase Cell Cycle CheckpointsMicrotubulesDNA-Binding ProteinsSpindle ApparatusCyclin D1MetaphaseDNA DamageGenes, cdcCyclin ACyclin Ecdc25 PhosphatasesFlow CytometryChromosomesMutationCentrosomeIn Situ Hybridization, FluorescenceCells, CulturedCyclin-Dependent Kinase 4Signal TransductionTumor Suppressor ProteinsCDC2-CDC28 KinasesMicrotubule-Associated ProteinsCyclin B1Transcription FactorsTime FactorsTumor Cells, CulturedAmino Acid SequenceDNAModels, BiologicalChromatinSchizosaccharomycesEstrous CycleTranscription, GeneticSaccharomyces cerevisiaeBase SequenceTelophaseE2F Transcription FactorsGene Expression RegulationRNA, MessengerNocodazoleHistonesTubulinProtein BindingMicroscopy, FluorescenceCell DifferentiationCell SurvivalBlotting, WesternBromodeoxyuridineProtein KinasesSaccharomyces cerevisiae ProteinsFibroblastsCyclin DCitric Acid CycleE2F1 Transcription FactorSchizosaccharomyces pombe ProteinsTransfectionFungal ProteinsRecombinant Fusion ProteinsS Phase Cell Cycle CheckpointsM Phase Cell Cycle CheckpointsCentriolesCell NucleolusDown-RegulationAntineoplastic AgentsRNA InterferenceChromosomal Proteins, Non-HistoneRNA, Small InterferingHydroxyureaFluorescent Antibody Technique