Germinal CenterPalatine TonsilLymphoma, FollicularB-LymphocytesLymphoma, B-CellLymphoid TissuePseudolymphomaProto-Oncogene Proteins c-bcl-6LymphomaDendritic Cells, FollicularLymph NodesLymphoma, Large B-Cell, DiffuseReceptors, Antigen, B-CellImmunoglobulin Heavy ChainsGenes, ImmunoglobulinLymphoma, Non-HodgkinNeprilysinImmunophenotypingB-Lymphocyte SubsetsChromosomes, Human, Pair 18PhenylacetatesSomatic Hypermutation, ImmunoglobulinImmunoenzyme TechniquesImmunohistochemistryPlasma CellsReceptors, CXCR5Flow CytometrySpleenAntibodies, MonoclonalImmunoglobulin Class SwitchingNitrophenolsChemokine CXCL13Leukemia, Lymphocytic, Chronic, B-CellProto-Oncogene Proteins c-bcl-2Gene Rearrangement, B-LymphocyteImmunoglobulin Variable RegionSkin NeoplasmsPolymerase Chain ReactionAntigens, CD40Immunologic MemoryAntigens, T-IndependentImmunoglobulin DDNA, NeoplasmPeyer's PatchesAntibody FormationCytidine DeaminaseMice, Inbred C57BLPeanut AgglutininLymphocyte ActivationImmunoglobulin MCell DifferentiationAntibody AffinityT-Lymphocytes, Helper-InducerImmunoglobulin GInducible T-Cell Co-Stimulator ProteinT-LymphocytesHaptensMice, KnockoutInterferon Regulatory FactorsMolecular Sequence DataMice, TransgenicChild Day Care CentersAntigenic ModulationReed-Sternberg CellsGene Rearrangement, B-Lymphocyte, Heavy ChainCD40 LigandReceptors, Complement 3dReceptors, Interleukin-21