Spheroids, CellularHCT116 CellsTumor Cells, CulturedCell SurvivalCell Line, TumorColonic NeoplasmsCell Culture TechniquesFurylfuramideCell AggregationNeuroaxonal DystrophiesLiver, ArtificialGliomaActiniumMisonidazoleAntineoplastic AgentsCell DivisionCell ProliferationHematocritAlpha ParticlesHematopoietic Stem Cell TransplantationLomustineCytological TechniquesNeoplasm TransplantationBiodegradable PlasticsLeukoencephalopathiesCoculture TechniquesTransplantation, HeterologousNeoplasms, ExperimentalNeoplastic Stem CellsMammary Neoplasms, ExperimentalCells, CulturedApoptosisOrganoidsNitroimidazolesProton IonophoresPeplomycinDrug Resistance, NeoplasmHT29 CellsTumor Stem Cell AssayModels, BiologicalCell MovementBrain NeoplasmsCell AdhesionCell SeparationFlow CytometryTransplantation, HomologousTime FactorsCell CycleDose-Response Relationship, RadiationDoxorubicinVolvoxRadiation ToleranceNeoplasm InvasivenessDrug Screening Assays, AntitumorMechlorethamineOxygenCell HypoxiaRadiation-Sensitizing AgentsCell LineHepatocytesMice, SCIDHematoporphyrin PhotoradiationDiffusionCystadenocarcinomaEnzyme Multiplied Immunoassay TechniqueCell CommunicationGene Expression Regulation, NeoplasticCellular MicroenvironmentTransplantation ConditioningBlotting, WesternAstatineFibroblastsNeoplasmsTissue EngineeringGlioblastomaMitochondrial DegradationCricetulusMice, NudeTumor MicroenvironmentPolyhydroxyethyl MethacrylateMelanomaCadherinsMicroscopy, ConfocalCricetinaeIodine RadioisotopesRNA, Small InterferingPhotochemotherapyImmunohistochemistryDNA, NeoplasmDose-Response Relationship, DrugOvarian NeoplasmsXenograft Model Antitumor AssaysNecrosisGraft vs Host Disease