Cell CycleCell Cycle ProteinsG1 PhaseS PhaseG2 PhaseCell Cycle CheckpointsMenstrual CycleMitosisCell DivisionG2 Phase Cell Cycle CheckpointsG1 Phase Cell Cycle CheckpointsApoptosisCyclinsCell ProliferationInterphaseCell Line, TumorFlow CytometryDNA DamageG0 PhaseRetinoblastoma ProteinCDC2 Protein KinaseCyclin-Dependent Kinase Inhibitor p21PhosphorylationCyclin D1Cyclin-Dependent Kinase Inhibitor p27Tumor Suppressor Protein p53Protein-Serine-Threonine KinasesCell LineFollicular PhaseCell SurvivalHeLa CellsDNA-Binding ProteinsDNA ReplicationLuteal PhaseTumor Cells, Culturedcdc25 PhosphatasesCyclin-Dependent Kinase 2Cyclin B1Cyclin ECyclin BCell NucleusBromodeoxyuridineSignal TransductionS Phase Cell Cycle CheckpointsTime FactorsDNABlotting, WesternCells, CulturedCyclin-Dependent Kinase 4Tumor Suppressor ProteinsNuclear ProteinsHistonesAntineoplastic Agents, PhytogenicAntineoplastic AgentsTranscription FactorsCyclin-Dependent KinasesAphidicolinEstrous CycleSaccharomyces cerevisiaeAtaxia Telangiectasia Mutated ProteinsMutationHydroxyureaGenes, cdcCyclin AModels, BiologicalRNA, MessengerMolecular Sequence DataHL-60 CellsDose-Response Relationship, DrugDNA RepairGene Expression RegulationProtein KinasesKineticsCell DifferentiationMicroscopy, FluorescenceCDC2-CDC28 KinasesAllyl CompoundsFibroblastsM Phase Cell Cycle CheckpointsPremenstrual SyndromeE2F Transcription FactorsRNA, Small InterferingDose-Response Relationship, RadiationGene Expression Regulation, NeoplasticPropidiumUltraviolet RaysTranscription, GeneticRadiation ToleranceEnzyme InhibitorsImmunohistochemistryDNA, NeoplasmBase SequenceGene ExpressionAmino Acid SequenceSaccharomyces cerevisiae ProteinsProgesteroneCyclin DCitric Acid CycleFertile PeriodUp-Regulation