Brain NeoplasmsGliomaCarmustineGlioblastomaMedulloblastomaEflornithineCell Line, TumorTumor Cells, CulturedOrnithineCell EngineeringCell SurvivalPutrescinePolyaminesTumor Stem Cell AssayAntineoplastic AgentsSpermidineAstrocytomaSister Chromatid ExchangeCell ProliferationCell DivisionO(6)-Methylguanine-DNA MethyltransferaseGene Expression Regulation, NeoplasticBrain ChemistryTumor Markers, BiologicalCell LineNeoplasms, ExperimentalApoptosisCell CycleDrug SynergismBrain InjuriesTumor BurdenMeningiomaTumor Necrosis Factor-alphaMagnetic Resonance ImagingNeoplasm TransplantationGliosarcomaNeoplasmsMice, NudeBrainKineticsBrain MappingNeoplasm MetastasisEpendymomaTumor Suppressor Protein p53Genes, Tumor SuppressorNeovascularization, PathologicImmunohistochemistryXenograft Model Antitumor AssaysMeningeal NeoplasmsTransplantation, HeterologousTumor MicroenvironmentCarcinoma, Ehrlich TumorMammary Neoplasms, ExperimentalWilms TumorAntigens, NeoplasmRNA, MessengerCerebellar NeoplasmsNeoplasm ProteinsMice, Inbred C57BLMice, Inbred BALB CTumor Suppressor ProteinsBlood-Brain BarrierNeoplastic Cells, CirculatingSignal TransductionTime FactorsAdenocarcinomaOligodendrogliomaCarcinoid TumorFibrosarcomaMice, SCIDBrain EdemaNeuroectodermal Tumors, PrimitiveDisease Models, AnimalNeuroendocrine TumorsBreast NeoplasmsColonic NeoplasmsBlotting, WesternCell Transformation, NeoplasticAntibodies, MonoclonalDNA, NeoplasmTransfectionSarcoma, ExperimentalNeoplastic Stem CellsCell MovementRats, Inbred F344Molecular Sequence DataReverse Transcriptase Polymerase Chain ReactionTissue DistributionMelanoma, ExperimentalFlow CytometryDisease ProgressionBrain StemMutationDose-Response Relationship, DrugGenetic TherapyCells, CulturedLung NeoplasmsOvarian NeoplasmsImmunotherapyBase Sequence