Cell CycleCell NucleusCell Cycle ProteinsCell Cycle CheckpointsG1 PhaseMitosisActive Transport, Cell NucleusS PhaseCell DivisionCyclinsNuclear ProteinsCell LineNucleus AccumbensMolecular Sequence DataHeLa CellsApoptosisCytoplasmG2 PhaseMenstrual CycleDNA-Binding ProteinsCell ProliferationDNA ReplicationInterphaseThalamic NucleiDNACell Line, TumorCell Nucleus ShapeSolitary NucleusCyclin-Dependent Kinase Inhibitor p21Cyclin-Dependent Kinase Inhibitor p27Amino Acid SequenceRNA, MessengerRetinoblastoma ProteinTranscription FactorsTranscription, GeneticCells, CulturedChromatinG2 Phase Cell Cycle CheckpointsTumor Suppressor Protein p53Signal TransductionTime FactorsProtein-Serine-Threonine KinasesCochlear NucleusMutationBase SequenceDNA DamagePhosphorylationNuclear Transfer TechniquesCDC2 Protein KinaseG0 PhaseMicroscopy, FluorescenceRaphe NucleiGene Expression RegulationModels, BiologicalNuclear EnvelopeG1 Phase Cell Cycle CheckpointsCyclin-Dependent Kinase 2Cerebellar NucleiImmunohistochemistrySeptal NucleiCyclin D1Flow CytometryTumor Cells, CulturedProtein BindingArcuate NucleusCaudate NucleusBlotting, WesternHistonesTumor Suppressor ProteinsCyclin EParaventricular Hypothalamic NucleusGenes, cdcCell DifferentiationCyclin BCyclin ATransfectionCloning, OrganismFibroblastsSaccharomyces cerevisiaeRecombinant Fusion ProteinsNeuronsCell Nucleus SizeCell NucleolusCell SurvivalCyclin-Dependent Kinase 4MicroinjectionsBromodeoxyuridineFluorescent Antibody TechniqueKineticsSaccharomyces cerevisiae ProteinsCDC2-CDC28 KinasesSuprachiasmatic NucleusEstrous CycleRed Nucleuscdc25 PhosphatasesTrigeminal NucleiChromosomesGreen Fluorescent ProteinsOocytesMicroscopy, Confocal