Cell CycleCell Cycle ProteinsApoptosisCell Cycle CheckpointsG1 PhaseMitosisCell DivisionS PhaseCyclinsCell Line, TumorCell ProliferationCaspasesG2 PhaseTumor Suppressor Protein p53Caspase 3Menstrual CycleCyclin-Dependent Kinase Inhibitor p21Signal TransductionCell LineFlow CytometryCyclin-Dependent Kinase Inhibitor p27Retinoblastoma ProteinG2 Phase Cell Cycle CheckpointsCells, CulturedCell SurvivalProto-Oncogene Proteins c-bcl-2DNA FragmentationPhosphorylationDNA DamageTumor Cells, CulturedProtein-Serine-Threonine KinasesG0 PhaseIn Situ Nick-End LabelingCDC2 Protein KinaseG1 Phase Cell Cycle CheckpointsMolecular Sequence DataDNA-Binding ProteinsCyclin-Dependent Kinase 2Time FactorsCyclin D1Cell Nucleusbcl-2-Associated X ProteinBlotting, WesternHeLa CellsNuclear ProteinsDNA ReplicationCyclin ETumor Suppressor ProteinsGenes, cdcMutationRNA, MessengerCyclin AInterphaseModels, BiologicalCyclin BTranscription FactorsGene Expression RegulationProto-Oncogene ProteinsCyclin-Dependent Kinase 4Antineoplastic AgentsEnzyme ActivationDNACell DifferentiationCDC2-CDC28 KinasesTransfectionDown-RegulationCell DeathE2F Transcription FactorsMitochondriaAmino Acid SequenceEstrous CycleEnzyme Inhibitorscdc25 PhosphatasesTranscription, GeneticBase SequenceAntigens, CD95RNA, Small InterferingProtein BindingE2F1 Transcription FactorCyclin B1Caspase InhibitorsSaccharomyces cerevisiaeBromodeoxyuridineFibroblastsCaspase 9Apoptosis Regulatory ProteinsAnnexin A5Gene Expression Regulation, NeoplasticJurkat CellsDose-Response Relationship, DrugCarrier ProteinsCyclin DImmunohistochemistryReverse Transcriptase Polymerase Chain ReactionPhagocytosisCitric Acid CycleMicrotubule-Associated ProteinsProtein KinasesProliferating Cell Nuclear AntigenSaccharomyces cerevisiae Proteins