Cell CycleCell Cycle ProteinsMenstrual CycleG1 PhaseS PhaseG2 PhaseMitosisCell DivisionInterphaseCell Cycle CheckpointsApoptosisFlow CytometryFollicular PhaseCyclinsDNA DamageLuteal PhaseCell ProliferationCell Line, TumorRetinoblastoma ProteinPhosphorylationCell LineCDC2 Protein KinaseProtein-Serine-Threonine KinasesDNA ReplicationBromodeoxyuridineHeLa CellsCell NucleusCyclin D1Tumor Cells, CulturedCyclin BTime FactorsDNA-Binding ProteinsCell SurvivalDNATumor Suppressor Protein p53HistonesAphidicolinTumor Suppressor ProteinsNuclear ProteinsCyclin-Dependent Kinase Inhibitor p21Cyclin-Dependent Kinase Inhibitor p27Cells, CulturedG2 Phase Cell Cycle CheckpointsEstrous CyclePremenstrual SyndromeHL-60 CellsAtaxia Telangiectasia Mutated ProteinsHydroxyureaSignal TransductionAntineoplastic AgentsPropidiumModels, BiologicalSaccharomyces cerevisiaeTranscription FactorsG0 PhaseBlotting, WesternMutationDNA RepairRNA, MessengerMicroscopy, FluorescenceG1 Phase Cell Cycle CheckpointsCyclin-Dependent Kinase 2KineticsGene Expression RegulationCell DifferentiationFertile PeriodCyclin EMolecular Sequence DataGenes, cdcAntineoplastic Agents, PhytogenicMitoxantroneCyclin ADose-Response Relationship, RadiationTopoisomerase II InhibitorsFibroblastsProgesteroneCyclin-Dependent Kinase 4ImmunohistochemistryCyclin-Dependent KinasesRadiation ToleranceDose-Response Relationship, DrugDNA, NeoplasmCDC2-CDC28 KinasesEnzyme InhibitorsDrug Screening Assays, Antitumorcdc25 PhosphatasesGene ExpressionUltraviolet RaysE2F Transcription FactorsStaining and LabelingCyclin B1CricetinaeTranscription, GeneticCyclin DCitric Acid CycleBreast NeoplasmsBase SequenceE2F1 Transcription FactorAmino Acid SequenceSaccharomyces cerevisiae Proteins