Tumor MicroenvironmentCell Line, TumorNeoplasmsCellular MicroenvironmentNeovascularization, PathologicStromal CellsTumor BurdenTumor Markers, BiologicalCell ProliferationTumor EscapeSignal TransductionLymphocytes, Tumor-InfiltratingNeoplasm MetastasisNeoplasms, ExperimentalTumor Necrosis Factor-alphaCell HypoxiaMice, Inbred C57BLGene Expression Regulation, NeoplasticCell MovementMammary Neoplasms, ExperimentalMice, NudeMelanoma, ExperimentalCoculture TechniquesTransplantation, HeterologousMice, Inbred BALB CMice, SCIDDisease ProgressionXenograft Model Antitumor AssaysImmunotherapyNeoplasm TransplantationBreast NeoplasmsCell CommunicationBrain NeoplasmsMyeloid CellsFibroblastsAntineoplastic AgentsCell Transformation, NeoplasticImmunohistochemistryModels, BiologicalFlow CytometryReverse Transcriptase Polymerase Chain ReactionNeoplasm InvasivenessCarcinoma, Lewis LungMice, TransgenicCells, CulturedMammary Neoplasms, AnimalAntigens, NeoplasmNeoplasm ProteinsOvarian NeoplasmsParacrine CommunicationGene Expression ProfilingMacrophagesExtracellular MatrixCell SurvivalAdenocarcinomaTumor Suppressor Protein p53Neoplastic Stem CellsAngiogenesis InhibitorsRNA, MessengerCytokinesCancer VaccinesWilms TumorDisease Models, AnimalPancreatic NeoplasmsApoptosisGenes, Tumor SuppressorBlotting, WesternTumor Suppressor ProteinsMice, KnockoutColonic NeoplasmsCell DifferentiationGliomaT-LymphocytesGlioblastomaT-Lymphocytes, RegulatoryCell LineEndothelial CellsUp-RegulationCell DivisionCarcinoid TumorMolecular Targeted TherapyDendritic CellsTime FactorsSkin NeoplasmsAntibodies, MonoclonalSpheroids, CellularCell Growth ProcessesCulture Media, ConditionedPhenotypeCD8-Positive T-LymphocytesNeuroendocrine TumorsRNA, Small InterferingLiver NeoplasmsFibrosarcomaLung NeoplasmsMelanomaHypoxia-Inducible Factor 1, alpha SubunitInflammationCell AdhesionBone Neoplasms