Tumor Stem Cell AssayNeoplastic Stem CellsColony-Forming Units AssayStem CellsHematopoietic Stem CellsBrain NeoplasmsGlioblastomaCell Line, TumorTumor Markers, BiologicalCell DifferentiationSpheroids, CellularCell ProliferationGliomaStem Cell TransplantationEmbryonic Stem CellsMice, SCIDGlycoproteinsAdult Stem CellsTransplantation, HeterologousPeptidesAntigens, CDGenes, Tumor SuppressorMice, NudeGene Expression Regulation, NeoplasticFlow CytometryCell Transformation, NeoplasticPluripotent Stem CellsNeoplasmsSignal TransductionNeoplasm TransplantationHematopoietic Stem Cell TransplantationTumor Cells, CulturedStem Cell NicheAntineoplastic AgentsNeural Stem CellsInduced Pluripotent Stem CellsModels, BiologicalTumor Suppressor ProteinsAntigens, CD24Multipotent Stem CellsMesenchymal Stem Cell TransplantationMesenchymal Stromal CellsCells, CulturedStem Cell FactorTumor Necrosis Factor-alpha