Spheroids, CellularTumor Cells, CulturedCell Line, TumorCell AggregationNeoplasms, ExperimentalCell SurvivalMammary Neoplasms, ExperimentalCell Culture TechniquesCell DivisionGliomaCell ProliferationAntineoplastic AgentsModels, BiologicalNeoplasmsNitrobenzoatesColonic NeoplasmsNiflumic AcidNeoplasm TransplantationCell HypoxiaTumor Markers, BiologicalTumor BurdenCoculture TechniquesDiffusionTumor Necrosis Factor-alphaMice, NudeCell MovementDrug Resistance, MultipleTime FactorsHypoxia-Inducible Factor 1, alpha SubunitNeoplasm InvasivenessCell LineBrain NeoplasmsProstatic NeoplasmsWilms TumorTumor MicroenvironmentP-GlycoproteinApoptosisTransplantation, HeterologousGenes, Tumor SuppressorCarcinoid TumorReactive Oxygen SpeciesTumor Suppressor Protein p53Neovascularization, PathologicTumor Suppressor ProteinsMisonidazoleNeuroendocrine TumorsFurylfuramideAdenocarcinomaNeuroaxonal DystrophiesNeoplasm MetastasisMice, SCIDActiniumOvarian NeoplasmsXenograft Model Antitumor AssaysLiver, ArtificialCells, CulturedNeoplastic Stem CellsMice, Inbred BALB CTumor Stem Cell AssayGlioblastomaAntigens, NeoplasmDNA, NeoplasmFibrosarcomaCell Transformation, NeoplasticImmunohistochemistryFlow CytometryAntibodies, MonoclonalReverse Transcriptase Polymerase Chain ReactionRNA, MessengerGastrointestinal Stromal TumorsSarcoma, ExperimentalBlotting, WesternMice, Inbred C57BLSignal TransductionCell AdhesionLomustineAlpha ParticlesGene Expression Regulation, NeoplasticDoxorubicinCarcinoma, Squamous CellCytological TechniquesBreast NeoplasmsPancreatic NeoplasmsNeoplasm Proteins