Leukemia, Lymphocytic, Chronic, B-CellLeukemia, LymphoidPrecursor Cell Lymphoblastic Leukemia-LymphomaLeukemiaLeukemia, Myeloid, AcuteAsparaginaseLeukemia, B-CellMethotrexateAntineoplastic Combined Chemotherapy ProtocolsCyclophosphamideDoxorubicinLeukemic InfiltrationLeukemia, T-CellVidarabineCytarabinePrecursor B-Cell Lymphoblastic Leukemia-LymphomaLeukemia, Biphenotypic, AcuteLeukemia, Myelogenous, Chronic, BCR-ABL PositiveChild WelfareAntineoplastic AgentsRemission InductionB-LymphocytesBone MarrowRemission, Spontaneous6-MercaptopurineDisabled ChildrenLymphocytes, NullLeukemia, ExperimentalChild BehaviorGene Expression Regulation, LeukemicVincristinePrognosisLeukemia-Lymphoma, Adult T-CellChlorambucilImmunoglobulin Heavy ChainsLymphomaBurkitt LymphomaTreatment OutcomeReceptors, Antigen, B-CellZAP-70 Protein-Tyrosine KinaseDaunorubicinRecurrenceLeukemia, Hairy CellRosette FormationKaryotypingTumor Cells, CulturedAntibodies, Monoclonal, Murine-DerivedDNA, NeoplasmChromosomes, Human, 6-12 and XAnisocoriaDrug Resistance, NeoplasmAcute DiseaseDrug Administration SchedulePhiladelphia ChromosomeLymphocytesTime FactorsSurvival AnalysisCorneal PerforationLeukemia P388Antibodies, MonoclonalCladribineTranslocation, GeneticChromosome AberrationsDexamethasoneLeukemia Virus, MurineLeukemia, MyeloidBlast CrisisDNA NucleotidylexotransferaseChild Health ServicesSurvival RateAntigens, NeoplasmChild RearingAntigens, CD5T-LymphocytesFlow CytometryEtoposideAntigens, CD38Fusion Proteins, bcr-ablLymphoma, Non-HodgkinChild, InstitutionalizedLeukemia L1210Risk FactorsBone Marrow TransplantationNeoplasm ProteinsChild Behavior DisordersChild PsychologyImmunoglobulin Variable RegionChromosomes, Human, Pair 14NeprilysinMutationAntineoplastic Agents, PhytogenicPrednisoneBase SequenceChild of Impaired ParentsSalvage TherapyPolymerase Chain ReactionAntigens, SurfaceDental Care for ChildrenMolecular Sequence DataClinical Trials as Topic