Cell ProliferationCell CycleGene Expression ProfilingCell Cycle ProteinsCell DivisionApoptosisCell Line, TumorCells, CulturedCell Cycle CheckpointsSignal TransductionG1 PhaseCell DifferentiationS PhaseMitosisBromodeoxyuridineCell LineCyclinsPhosphorylationRNA, MessengerCyclin-Dependent Kinase Inhibitor p27Cell SurvivalCyclin-Dependent Kinase Inhibitor p21Cyclin D1Blotting, WesternTumor Cells, CulturedFlow CytometryProliferating Cell Nuclear AntigenRetinoblastoma ProteinImmunohistochemistryGene Expression RegulationMolecular Sequence DataProtein-Serine-Threonine KinasesGene Expression Regulation, NeoplasticG2 PhaseTime FactorsTranscription FactorsRNA, Small InterferingDown-RegulationTumor Suppressor Protein p53Reverse Transcriptase Polymerase Chain ReactionDNA-Binding ProteinsCell MovementTransfectionG0 PhaseMice, Inbred C57BLKi-67 AntigenG1 Phase Cell Cycle CheckpointsNuclear ProteinsFibroblastsDose-Response Relationship, DrugTumor Suppressor ProteinsDNAMenstrual CycleLymphocyte ActivationMutationCell Growth ProcessesCyclin EGene ExpressionCyclin-Dependent Kinase 2RNA InterferenceModels, BiologicalBase SequenceDNA ReplicationG2 Phase Cell Cycle CheckpointsMice, KnockoutEpithelial CellsUp-RegulationThymidineStem CellsCyclin ACell NucleusAntineoplastic AgentsTranscription, GeneticProto-Oncogene ProteinsEnzyme InhibitorsCyclin-Dependent Kinase 4Mice, NudeAmino Acid SequenceEnzyme ActivationMice, TransgenicCell Transformation, NeoplasticCDC2 Protein KinaseT-LymphocytesProto-Oncogene Proteins c-mycProto-Oncogene Proteins c-aktCell CountProtein BindingDNA DamageHeLa CellsGene Expression Regulation, DevelopmentalCyclin DInterphaseGrowth InhibitorsPhenotypeE2F Transcription FactorsGene Knockdown TechniquesGenes, cdcCDC2-CDC28 KinasesMice, Inbred BALB CBreast Neoplasms