LeukemiaLeukemia, Myeloid, AcuteLeukemia, ExperimentalDrug ResistanceLeukemia, Lymphocytic, Chronic, B-CellDrug Resistance, NeoplasmLeukemia, LymphoidTumor Cells, CulturedHL-60 CellsLeukemia, Myelogenous, Chronic, BCR-ABL PositiveLeukemia L1210Leukemia P388Killer Cells, NaturalAntineoplastic AgentsK562 CellsPrecursor Cell Lymphoblastic Leukemia-LymphomaCell Line, TumorLeukemia, Monocytic, AcuteGene Expression Regulation, LeukemicApoptosisLeukemia Virus, MurineCell LineLeukemia, T-CellDaunorubicinDrug Resistance, MultipleP-GlycoproteinCell SurvivalLeukemia, MyeloidLeukemia, B-CellCytotoxicity, ImmunologicDoxorubicinCell DivisionDrug Screening Assays, AntitumorFusion Proteins, bcr-ablCell DifferentiationLeukemia, Hairy CellNeoplasm ProteinsFlow CytometryMoloney murine leukemia virusCytarabineLeukemia, Promyelocytic, AcuteDrug SynergismCell ProliferationRNA, MessengerMolecular Sequence DataDose-Response Relationship, DrugAntibiotics, AntineoplasticT-LymphocytesLeukemia Virus, FelineCells, CulturedLeukemia Virus, BovineLeukemia-Lymphoma, Adult T-CellDNA, NeoplasmBase SequenceMutationMyeloid-Lymphoid Leukemia ProteinPrecursor B-Cell Lymphoblastic Leukemia-LymphomaSpleenTime FactorsBone MarrowSignal TransductionLeukemia, Radiation-InducedLeukemia, Basophilic, AcuteFriend murine leukemia virusLeukemia, Megakaryoblastic, AcuteTretinoinProto-Oncogene Proteins c-bcl-2VerapamilAntibodies, MonoclonalKaryotypingLymphocyte ActivationLymphocytesCell CycleAcute DiseaseClone CellsAntineoplastic Agents, PhytogenicKineticsGene Expression Regulation, NeoplasticMethotrexateLeukemia, Biphenotypic, AcuteDrug Resistance, MicrobialLymphomaU937 CellsTransfectionMice, Inbred BALB CCaspasesMice, Inbred C57BLPhenotypeMyeloid Cell Leukemia Sequence 1 ProteinRNA, NeoplasmNeoplastic Stem CellsBlotting, WesternHematopoietic Stem CellsMice, SCIDReverse Transcriptase Polymerase Chain ReactionPiperazinesDown-RegulationVincristineInterleukin-2Tumor Stem Cell Assay