Cell CycleCell ProliferationInterphaseCell Cycle ProteinsMitosisCell Cycle CheckpointsG1 PhaseCell DivisionS PhaseCell NucleusCyclinsG2 PhaseCDC2 Protein KinaseMicrotubulesMetaphaseIn Situ Hybridization, FluorescenceHeLa CellsSpindle ApparatusChromosomesMenstrual CycleNuclear ProteinsApoptosisPhosphorylationCell LineCentrosomeMolecular Sequence DataProtein-Serine-Threonine KinasesTelophaseCyclin BCyclin-Dependent Kinase Inhibitor p21Cyclin-Dependent Kinase Inhibitor p27Retinoblastoma ProteinTime FactorsChromatinG2 Phase Cell Cycle CheckpointsCell Line, TumorMicrotubule-Associated ProteinsDNA ReplicationDNA-Binding Proteinscdc25 PhosphatasesTubulinTumor Suppressor Protein p53Cyclin-Dependent Kinase 2G0 PhaseNocodazoleMutationDNA DamageModels, BiologicalCyclin AG1 Phase Cell Cycle CheckpointsCells, CulturedSchizosaccharomycesMicroscopy, FluorescenceAmino Acid SequenceGenes, cdcDNAFlow CytometryCyclin D1Cell NucleolusCyclin B1Cyclin EHistonesCentriolesSignal TransductionTranscription FactorsTumor Cells, CulturedBase SequenceCDC2-CDC28 KinasesCentromereProtein BindingTumor Suppressor ProteinsNuclear EnvelopeProphaseCyclin-Dependent Kinase 4Chromosomal Proteins, Non-HistoneTranscription, GeneticSchizosaccharomyces pombe ProteinsFluorescent Antibody TechniqueChromosomes, HumanSaccharomyces cerevisiaeGene Expression RegulationRNA, MessengerFibroblastsRecombinant Fusion ProteinsChromosome PositioningChromosome AberrationsEstrous CycleProtein KinasesCytoplasmBlotting, WesternCell SurvivalAnaphaseE2F Transcription FactorsBromodeoxyuridineSaccharomyces cerevisiae ProteinsCell DifferentiationTransfectionFungal ProteinsRNA InterferenceNucleolus Organizer Region