Cell CycleApoptosisCell Cycle ProteinsCells, CulturedCell LineSignal TransductionCell Cycle CheckpointsFlow CytometryPhosphorylationCaspasesTumor Suppressor Protein p53Caspase 3Proto-Oncogene Proteins c-bcl-2G1 PhaseCell DivisionCell Line, TumorMolecular Sequence DataCyclinsCell SurvivalG2 PhaseApoptosis Regulatory ProteinsDNA DamageMitosisCell ProliferationS PhaseCyclin-Dependent Kinase Inhibitor p21bcl-2-Associated X ProteinTumor Cells, CulturedAmino Acid SequenceBase SequenceIn Situ Nick-End LabelingCell MembraneProtein-Serine-Threonine KinasesEnzyme ActivationDNA FragmentationCell AdhesionMenstrual CycleCaspase 9Blotting, WesternProto-Oncogene ProteinsCyclin-Dependent Kinase Inhibitor p27Time FactorsRetinoblastoma ProteinHeLa CellsG2 Phase Cell Cycle CheckpointsRNA, MessengerMitochondriaTransfectionbcl-X ProteinFas Ligand ProteinEnzyme InhibitorsInhibitor of Apoptosis ProteinsGene Expression RegulationAntineoplastic AgentsDown-RegulationG0 PhaseMutationCDC2 Protein KinaseRNA, Small InterferingDNA-Binding ProteinsPoly(ADP-ribose) PolymerasesG1 Phase Cell Cycle CheckpointsCaspase 8Caspase InhibitorsCyclin-Dependent Kinase 2Cyclin D1Genes, bcl-2Gene Expression Regulation, NeoplasticNuclear ProteinsTumor Suppressor ProteinsFibroblastsCytochromes cCell NucleusCyclin EDNA ReplicationDose-Response Relationship, DrugGamma RaysGenes, cdcTranscription FactorsCyclin ACysteine Proteinase InhibitorsCyclin BInterphaseReverse Transcriptase Polymerase Chain ReactionModels, BiologicalCell DeathCell Line, TransformedCyclin-Dependent Kinase 4Mice, Inbred C57BLAntigens, CD95Myeloid Cell Leukemia Sequence 1 ProteinProto-Oncogene Proteins c-aktCell DifferentiationUltraviolet RaysMice, KnockoutCDC2-CDC28 KinasesNeoplasm ProteinsTranscription, GeneticReactive Oxygen SpeciesE2F Transcription Factors