Tumor MicroenvironmentCellular MicroenvironmentB-Lymphocyte SubsetsB-LymphocytesMice, Inbred C57BLLymphocyte ActivationCell DifferentiationStromal CellsGerminal CenterSpleenImmunoglobulin MFlow CytometrySignal TransductionCells, CulturedCell Line, TumorMice, Inbred BALB CImmunoglobulin DMice, TransgenicCell ProliferationAntigens, CD19Bone Marrow CellsCoculture TechniquesMice, KnockoutCell CommunicationB-Cell Activating FactorNeoplasmsBone MarrowAntigens, CD40Antigens, CDImmunoglobulin Heavy ChainsPrecursor Cells, B-LymphoidLymphocyte CooperationCell MovementStem Cell NicheImmunologic MemoryLymphoma, B-CellImmunoglobulin GGene Rearrangement, B-LymphocyteImmunoglobulinsMice, SCIDHematopoietic Stem CellsAntigens, CD5Immunoglobulin Variable RegionImmunophenotypingCell SurvivalCell LineNeovascularization, PathologicGenes, ImmunoglobulinAntibodies, MonoclonalApoptosisAntibody FormationExtracellular MatrixCytokinesB-Cell Activation Factor ReceptorImmune ToleranceCell SeparationLymphopoiesisLeukemia, Lymphocytic, Chronic, B-CellDendritic Cells, FollicularAntigens, Differentiation, B-LymphocyteReceptors, Complement 3dLymphoid TissueSialic Acid Binding Ig-like Lectin 2Thymus GlandCD40 LigandReceptors, CXCR5Reverse Transcriptase Polymerase Chain ReactionTumor Cells, CulturedPhenotypeImmunohistochemistryImmunoglobulin mu-ChainsChemokine CXCL13Gene Rearrangement, B-Lymphocyte, Heavy ChainTumor EscapeAntigens, CD27Gene Expression Regulation, NeoplasticCell Culture TechniquesCell DivisionDendritic CellsInterleukin-4AutoimmunityMolecular Sequence DataCell HypoxiaLymph NodesClone CellsEpitopes, B-LymphocyteCD4-Positive T-LymphocytesMice, NudeNeoplasm TransplantationStem CellsCell AdhesionMembrane GlycoproteinsMacrophagesAntigens, T-IndependentModels, BiologicalRNA, MessengerLymphocytes, Tumor-InfiltratingLymphocyte CountAutoantibodiesUp-Regulation