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 AgentsReceptors, Antigen, B-CellZAP-70 Protein-Tyrosine KinasePrognosisBurkitt LymphomaLymphomaChlorambucilLeukemia, Hairy CellAntineoplastic Combined Chemotherapy ProtocolsRosette FormationChromosomes, Human, 6-12 and XAnisocoriaKaryotypingDNA, NeoplasmPhiladelphia ChromosomeCorneal PerforationLymphocytesLeukemia Virus, MurineBlast CrisisAcute DiseaseChromosome AberrationsRecurrenceTranslocation, GeneticAntigens, NeoplasmCladribineAntigens, CD5Tumor Cells, CulturedDNA NucleotidylexotransferaseT-LymphocytesTreatment OutcomeAntibodies, MonoclonalCyclophosphamideLeukemia, MyeloidAntigens, CD38Fusion Proteins, bcr-ablImmunoglobulin Variable RegionChromosomes, Human, Pair 14NeprilysinFlow CytometryDrug Resistance, NeoplasmNeoplasm ProteinsBone Marrow TransplantationDaunorubicinMutationPrednisoneAntigens, SurfaceBase SequenceTime FactorsSurvival AnalysisPolymerase Chain ReactionLeukemia, Prolymphocytic, T-CellMolecular Sequence DataCyclin-Dependent Kinase Inhibitor p15Survival RateLeukemia, Monocytic, AcuteAntibodies, Monoclonal, Murine-DerivedImmunophenotypingDrug Administration ScheduleDexamethasoneChromosomes, Human, Pair 9Leukemia, Large Granular LymphocyticChromosomes, Human, Pair 13Salvage TherapyLeukemia L1210Antibodies, NeoplasmMoloney murine leukemia virusHematologic NeoplasmsRetrospective StudiesApoptosisCell Transformation, NeoplasticLymphocytosisRisk FactorsProto-Oncogene ProteinsGenes, Immunoglobulin Heavy Chain