Cell CycleG2 PhaseGene Products, vprG1 PhaseCell Cycle ProteinsS PhaseDisease ProgressionCell DivisionCell Line, TumorPhosphorylationMammalsCell LineMolecular Sequence DataCell Cycle CheckpointsMitosisAmino Acid SequenceHeLa CellsBase SequenceCyclinsMutationApoptosisCell ProliferationSignal TransductionTransfectionCricetinaeCells, CulturedDNA-Binding ProteinsRNA, MessengerProtein-Serine-Threonine KinasesNuclear ProteinsTranscription FactorsDNA DamageDNATime FactorsRetinoblastoma ProteinCell NucleusDNA ReplicationCyclin-Dependent Kinase Inhibitor p27Protein BindingGene Expression RegulationModels, BiologicalCyclin-Dependent Kinase Inhibitor p21Transcription, GeneticTumor Cells, CulturedMenstrual CycleTumor Suppressor Protein p53Saccharomyces cerevisiaeCDC2 Protein KinaseBlotting, WesternFlow CytometryRecombinant Fusion ProteinsCyclin-Dependent Kinase 2Cloning, MolecularCell SurvivalSequence Homology, Amino AcidCarrier ProteinsG2 Phase Cell Cycle CheckpointsTumor Suppressor ProteinsFibroblastsInterphaseG0 PhaseGene ExpressionCHO CellsCyclin D1Cyclin ERNA, Small InterferingRecombinant ProteinsRNA InterferenceSaccharomyces cerevisiae ProteinsKineticsCyclin AProtein KinasesCyclin BDNA RepairG1 Phase Cell Cycle CheckpointsPromoter Regions, GeneticGene Expression Regulation, NeoplasticCricetulusGenes, cdcCyclin-Dependent Kinase 4Microscopy, FluorescenceCOS CellsCDC2-CDC28 KinasesProteinsPlasmidsImmunohistochemistryReverse Transcriptase Polymerase Chain ReactionProtein Structure, TertiaryEmbryo, MammalianDNA PrimersE2F Transcription FactorsDown-RegulationPhenotypeGene Expression ProfilingCercopithecus aethiopsDNA, ComplementaryAntineoplastic AgentsCell Transformation, Neoplasticcdc25 Phosphatases3T3 Cells