SimazineKiller Cells, NaturalApoptosisCell ProliferationCells, CulturedCytokinesSignal TransductionKiller Cells, Lymphokine-ActivatedMice, Inbred C57BLCytotoxicity, ImmunologicCell Line, TumorFlow CytometryCaspase 3Lymphocyte ActivationT-LymphocytesCaspasesImmune SystemApoptosis Regulatory ProteinsCell SurvivalCell LineInterferon-gammaProto-Oncogene Proteins c-bcl-2Mice, Inbred BALB CInterleukin-2In Situ Nick-End LabelingMice, KnockoutRNA, MessengerTumor Necrosis Factor-alphaImmunity, InnateCell DivisionReceptors, Natural Killer CellTumor Cells, CulturedCell DifferentiationSpleenKiller Factors, YeastBlotting, WesternInhibitor of Apoptosis ProteinsDNA FragmentationReceptors, KIRGene Expression Regulationbcl-2-Associated X ProteinFas Ligand ProteinAntigens, CDMacrophagesMembrane GlycoproteinsCytokine-Induced Killer CellsTime FactorsReceptors, ImmunologicUp-RegulationDown-RegulationImmunohistochemistryLymphocytesEnzyme ActivationCell CycleReverse Transcriptase Polymerase Chain Reaction