Cell CycleCell Cycle ProteinsApoptosisCell Cycle CheckpointsG1 PhaseCell DivisionMitosisS PhaseCyclinsCell Line, TumorCell ProliferationTumor Suppressor Protein p53G2 PhaseCaspasesCyclin-Dependent Kinase Inhibitor p21Apoptosis Regulatory ProteinsMenstrual CycleCaspase 3Signal TransductionProto-Oncogene Proteins c-bcl-2Cell LineCyclin-Dependent Kinase Inhibitor p27Retinoblastoma ProteinCell SurvivalG2 Phase Cell Cycle CheckpointsFlow CytometryPhosphorylationCells, CulturedTumor Cells, CulturedProtein-Serine-Threonine KinasesInhibitor of Apoptosis ProteinsDNA DamageG0 PhaseCDC2 Protein KinaseDNA-Binding ProteinsG1 Phase Cell Cycle CheckpointsBlotting, WesternDNA FragmentationCyclin-Dependent Kinase 2Cyclin D1Molecular Sequence DataTime FactorsNuclear Proteinsbcl-2-Associated X ProteinTumor Suppressor ProteinsRNA, MessengerHeLa CellsIn Situ Nick-End LabelingCell NucleusCyclin EDNA ReplicationMutationAntineoplastic AgentsGenes, cdcTranscription FactorsCyclin AEnzyme ActivationProto-Oncogene ProteinsGene Expression RegulationCyclin BInterphaseTransfectionModels, BiologicalDown-RegulationCyclin-Dependent Kinase 4RNA, Small InterferingEnzyme InhibitorsCell DifferentiationCDC2-CDC28 KinasesTranscription, GeneticE2F Transcription FactorsDNAcdc25 PhosphatasesBase SequenceAmino Acid SequenceGene Expression Regulation, NeoplasticEstrous CycleMitochondriaX-Linked Inhibitor of Apoptosis ProteinE2F1 Transcription FactorCyclin B1FibroblastsDose-Response Relationship, DrugProtein BindingCaspase 9Caspase InhibitorsSaccharomyces cerevisiaeReverse Transcriptase Polymerase Chain ReactionCarrier ProteinsBromodeoxyuridineApoptosis Inducing FactorCyclin DRNA InterferenceMicrotubule-Associated ProteinsUp-RegulationCASP8 and FADD-Like Apoptosis Regulating ProteinGene ExpressionProtein KinasesCitric Acid CycleCell Death