Cell CycleCell NucleusCell Cycle ProteinsCell Cycle CheckpointsG1 PhaseMitosisS PhaseCell DivisionCyclinsNucleus AccumbensG2 PhaseMenstrual CycleApoptosisThalamic NucleiSolitary NucleusCell ProliferationCyclin-Dependent Kinase Inhibitor p21Cyclin-Dependent Kinase Inhibitor p27Retinoblastoma ProteinActive Transport, Cell NucleusMolecular Sequence DataG2 Phase Cell Cycle CheckpointsNuclear ProteinsCell LineCochlear NucleusCell Line, TumorDNA-Binding ProteinsCDC2 Protein KinaseInterphaseG0 PhaseTumor Suppressor Protein p53DNA ReplicationProtein-Serine-Threonine KinasesRaphe NucleiSignal TransductionG1 Phase Cell Cycle CheckpointsCyclin-Dependent Kinase 2HeLa CellsCerebellar NucleiSeptal NucleiCyclin D1Time FactorsTranscription FactorsDNA DamageRNA, MessengerArcuate NucleusCaudate NucleusCytoplasmCells, CulturedPhosphorylationCyclin EMutationParaventricular Hypothalamic NucleusGenes, cdcTranscription, GeneticAmino Acid SequenceFlow CytometryCyclin BCyclin ADNAGene Expression RegulationTumor Suppressor ProteinsBase SequenceCyclin-Dependent Kinase 4Models, BiologicalTumor Cells, CulturedSaccharomyces cerevisiaeNeuronsCDC2-CDC28 KinasesSuprachiasmatic NucleusEstrous CycleRed Nucleuscdc25 PhosphatasesBlotting, WesternTrigeminal NucleiCell DifferentiationProtein BindingSubthalamic NucleusE2F Transcription FactorsSaccharomyces cerevisiae ProteinsSupraoptic NucleusCyclin B1Cell SurvivalTransfectionImmunohistochemistryBromodeoxyuridineHistonesCyclin DMicroscopy, FluorescenceFibroblastsChromatinRats, Sprague-DawleyE2F1 Transcription FactorCitric Acid CycleRecombinant Fusion ProteinsProtein KinasesFungal ProteinsDown-RegulationKineticsSchizosaccharomyces