Cell CycleCell AgingCell NucleusCell Cycle ProteinsFibroblastsMenstrual CycleErythrocyte AgingCell Cycle CheckpointsCell DivisionCells, CulturedTime FactorsCyclin-Dependent Kinase Inhibitor p21Cell LineCyclin-Dependent Kinase Inhibitor p16Anion Exchange Protein 1, ErythrocyteMitosisApoptosisTumor Suppressor Protein p53DNA DamageCell ProliferationCyclinsbeta-GalactosidaseG1 PhaseGene Expression RegulationRNA, MessengerCell Line, TumorNuclear ProteinsMolecular Sequence DataModels, BiologicalSignal TransductionRetinoblastoma ProteinDNAS PhaseEstrous CycleLuteal PhaseAgingTelomereFlow CytometryDNA-Binding ProteinsDiploidyPhosphorylationFollicular PhaseProtein-Serine-Threonine KinasesTumor Suppressor ProteinsNucleus AccumbensBase SequenceDNA ReplicationHeterochromatinPhenotypeG2 PhaseTransfectionBlotting, WesternTranscription FactorsHistonesTranscription, GeneticNeuronsThalamic NucleiPeriodicityMutationSolitary NucleusCyclin-Dependent Kinase Inhibitor p27Active Transport, Cell NucleusG2 Phase Cell Cycle CheckpointsTelomeraseCircadian RhythmTumor Cells, CulturedRNA, Small InterferingCell DifferentiationRNA InterferenceAmino Acid SequenceProtein BindingImmunohistochemistryDown-RegulationUp-RegulationCochlear NucleusRats, Sprague-DawleyGene ExpressionCDC2 Protein KinaseInterphaseG0 PhaseRaphe NucleiBiological ClocksOxidative StressG1 Phase Cell Cycle CheckpointsCyclin-Dependent Kinase 2HeLa CellsCerebellar NucleiNeoplasmsBiological MarkersSeptal NucleiCyclin D1KineticsPromoter Regions, GeneticArcuate NucleusCaudate NucleusCytoplasmCyclin EParaventricular Hypothalamic NucleusGene Expression ProfilingCyclin-Dependent Kinases