Leukemia, Lymphocytic, Chronic, B-CellLeukemia, LymphoidLeukemiaPrecursor Cell Lymphoblastic Leukemia-LymphomaLeukemia, Myeloid, AcuteVidarabineLeukemia, B-CellGene Expression Regulation, LeukemicZAP-70 Protein-Tyrosine KinaseB-LymphocytesChlorambucilImmunoglobulin Heavy ChainsReceptors, Antigen, B-CellCladribineAntigens, CD5Leukemia, Hairy CellLeukemia, Myelogenous, Chronic, BCR-ABL PositiveLeukemic InfiltrationAntigens, CD38Leukemia, T-CellImmunoglobulin Variable RegionAntineoplastic AgentsLeukemia, ExperimentalBone MarrowPrognosisAntibodies, Monoclonal, Murine-DerivedRemission InductionChromosomes, Human, Pair 13AsparaginaseLymphomaLeukemia, Biphenotypic, AcuteAntibodies, MonoclonalLeukemia, Prolymphocytic, T-CellPrecursor B-Cell Lymphoblastic Leukemia-LymphomaChromosome AberrationsAntibodies, NeoplasmGenes, Immunoglobulin Heavy ChainLymphocytesFlow CytometryTumor Cells, CulturedAntineoplastic Combined Chemotherapy ProtocolsLymphocytosisImmunophenotypingCytarabineLeukemia Virus, MurineDNA, NeoplasmLeukemia-Lymphoma, Adult T-CellKaryotypingLymphocytes, NullMethotrexateVincristineApoptosisRemission, SpontaneousT-LymphocytesMutationNeoplasm ProteinsAntigens, CD20Treatment OutcomeMyeloid Cell Leukemia Sequence 1 ProteinLeukemia, ProlymphocyticVidarabine PhosphateBurkitt LymphomaPentostatinDrug Resistance, NeoplasmRosette FormationCyclophosphamide6-MercaptopurineAntigens, CD19Antigens, NeoplasmGenes, ImmunoglobulinGene Rearrangement, B-Lymphocyte, Heavy ChainTrisomyChromosomes, Human, Pair 12RecurrenceSurvival AnalysisAntigens, CDChromosomes, Human, Pair 11Chromosomes, Human, 6-12 and XSurvival RateAcute DiseaseIn Situ Hybridization, FluorescenceLymphoma, B-CellLymphoma, Non-HodgkinProto-Oncogene Proteins c-bcl-2Leukemia, Monocytic, AcuteLymphoma, Mantle-CellSomatic Hypermutation, ImmunoglobulinBase SequencePhiladelphia ChromosomeChromosomes, Human, Pair 14Leukemia, Large Granular LymphocyticTranslocation, GeneticPolymerase Chain ReactionNitrogen Mustard CompoundsNeoplasm, ResidualLeukemia L1210Leukemia, Radiation-InducedMolecular Sequence DataAntigens, SurfaceTime Factors