Leukemia, Lymphocytic, Chronic, B-CellLeukemia, LymphoidPrecursor Cell Lymphoblastic Leukemia-LymphomaLeukemiaLeukemia, Myeloid, AcuteLeukemia, B-CellLeukemic InfiltrationAsparaginaseLeukemia, T-CellLeukemia, Myelogenous, Chronic, BCR-ABL PositiveVidarabinePrecursor B-Cell Lymphoblastic Leukemia-LymphomaLeukemia, Biphenotypic, AcuteB-LymphocytesMethotrexateBone MarrowRemission, SpontaneousLymphocytes, NullGene Expression Regulation, LeukemicCytarabineVincristine6-MercaptopurineImmunoglobulin Heavy ChainsRemission InductionLeukemia, ExperimentalLeukemia-Lymphoma, Adult T-CellAntineoplastic AgentsPrognosisReceptors, Antigen, B-CellLymphomaZAP-70 Protein-Tyrosine KinaseBurkitt LymphomaChlorambucilLeukemia, Hairy CellAntineoplastic Combined Chemotherapy ProtocolsRosette FormationKaryotypingAnisocoriaChromosomes, Human, 6-12 and XDNA, NeoplasmPhiladelphia ChromosomeCorneal PerforationLymphocytesBlast CrisisLeukemia Virus, MurineAcute DiseaseChromosome AberrationsTranslocation, GeneticRecurrenceAntigens, NeoplasmCladribineAntigens, CD5Tumor Cells, CulturedAntibodies, MonoclonalDNA NucleotidylexotransferaseT-LymphocytesTreatment OutcomeCyclophosphamideLeukemia, MyeloidFusion Proteins, bcr-ablAntigens, CD38Immunoglobulin Variable RegionChromosomes, Human, Pair 14Flow CytometryNeprilysinDrug Resistance, NeoplasmNeoplasm ProteinsPolymerase Chain ReactionMutationBone Marrow TransplantationPrednisoneDaunorubicinSurvival AnalysisBase SequenceAntigens, SurfaceTime FactorsLeukemia, Prolymphocytic, T-CellSurvival RateMolecular Sequence DataCyclin-Dependent Kinase Inhibitor p15Antibodies, Monoclonal, Murine-DerivedLeukemia, Monocytic, AcuteImmunophenotypingDexamethasoneChromosomes, Human, Pair 9Retrospective StudiesLeukemia, Large Granular LymphocyticChromosomes, Human, Pair 13Drug Administration ScheduleSalvage TherapyAntibodies, NeoplasmLeukemia L1210Moloney murine leukemia virusHematologic NeoplasmsApoptosisCell Transformation, NeoplasticLymphocytosisProto-Oncogene ProteinsGenes, Immunoglobulin Heavy ChainLeukemia, Prolymphocytic