Precursor Cell Lymphoblastic Leukemia-LymphomaLeukemia, Biphenotypic, AcuteLeukemiaLeukemia, Myeloid, AcuteLeukemia, Lymphocytic, Chronic, B-CellLeukemia, LymphoidAcute DiseaseSurvival RateAsparaginaseLeukemia, B-CellLeukemia, Myelogenous, Chronic, BCR-ABL PositivePrecursor B-Cell Lymphoblastic Leukemia-LymphomaCytarabineRemission InductionGene Expression Regulation, LeukemicBone MarrowLeukemic InfiltrationLeukemia, Monocytic, AcuteLeukemia, ExperimentalLeukemia, T-CellPrognosisMethotrexate6-MercaptopurineVincristineAntineoplastic Combined Chemotherapy ProtocolsTreatment OutcomeAntineoplastic AgentsSurvival AnalysisLeukemia-Lymphoma, Adult T-CellKaryotypingRecurrenceLeukemia, MyeloidDisease-Free SurvivalCell SurvivalVidarabineRemission, SpontaneousB-LymphocytesBurkitt LymphomaDaunorubicinLeukemia Virus, MurineMyeloid-Lymphoid Leukemia ProteinTranslocation, GeneticChromosome AberrationsLeukemia, Hairy CellTime FactorsBlast CrisisRetrospective StudiesLymphomaDNA, NeoplasmBone Marrow TransplantationNeoplasm, ResidualImmunophenotypingImmunoglobulin Heavy ChainsPhiladelphia ChromosomePrednisoneLymphocytes, NullNeoplasm ProteinsTumor Cells, CulturedDrug Resistance, NeoplasmCore Binding Factor Alpha 2 SubunitCyclophosphamideRisk FactorsReceptors, Antigen, B-CellAntigens, NeoplasmFollow-Up StudiesLymphocytesLeukemia, Radiation-InducedFusion Proteins, bcr-ablChromosomes, Human, 6-12 and XChlorambucilZAP-70 Protein-Tyrosine KinaseTransplantation, HomologousFlow CytometryApoptosisMutationMoloney murine leukemia virusT-LymphocytesBase SequenceLeukemia L1210Combined Modality TherapyAntibodies, MonoclonalCladribineChromosomes, Human, Pair 11DNA NucleotidylexotransferaseRosette FormationChromosomes, Human, Pair 12Drug Administration ScheduleMolecular Sequence DataPolymerase Chain ReactionCase-Control StudiesLeukemia Virus, BovineCell Line, TumorGene RearrangementLeukemia Virus, FelineNeprilysinAnisocoriaCranial IrradiationInfant, NewbornKaplan-Meier EstimateDoxorubicin