B-LymphocytesPalatine TonsilSocial IsolationMolecular Sequence DataReceptors, Antigen, B-CellBase SequenceAmino Acid SequenceLymphocyte ActivationHerpesvirus 4, HumanB-Lymphocyte SubsetsReproductive IsolationPatient IsolationCell LineImmunoglobulin MCells, CulturedCloning, MolecularCell SeparationAntigens, CD40Immunoglobulin DSpecies SpecificityAntigens, CD19Antigens, Differentiation, B-LymphocyteInterleukin-4Receptors, Complement 3dAntibodies, MonoclonalBurkitt LymphomaMolecular WeightImmunoglobulinsMutationPolymerase Chain ReactionCell Line, TransformedImmunoglobulin GAntigens, CDPhylogenyT-LymphocytesRNA, MessengerSequence Analysis, DNADNACell Transformation, ViralCulture MediaReceptor, Bradykinin B1Sequence Homology, Amino AcidPokeweed MitogensCD40 LigandCell DifferentiationFlow CytometryElectrophoresis, Polyacrylamide GelLymphoma, B-CellLeukemia, B-CellEpstein-Barr Virus Nuclear AntigensTime FactorsReceptors, BradykininReceptor, Bradykinin B2PhenotypeKineticsFermentationDNA, ComplementaryRecombinant ProteinsSignal TransductionTumor Cells, CulturedImmunoglobulin Heavy ChainsGene Expression RegulationCattleAntibodies, Anti-IdiotypicEscherichia coliImmunoglobulin Class SwitchingChromatography, High Pressure LiquidCell DivisionBacteriological TechniquesDNA PrimersGenes, ImmunoglobulinPulmonary VeinsFecesInterleukinsSequence Homology, Nucleic AcidTranscription, GeneticPlasma CellsProtein BindingAmino AcidsB7 AntigensMicroscopy, ElectronImmunoglobulin EAntigens, CD27DNA, BacterialAntigens, SurfaceAntibody FormationReverse Transcriptase Polymerase Chain ReactionLymphocyte CooperationChromatography, AffinitySequence AlignmentChromosome MappingGene ExpressionImmunoglobulin gamma-ChainsImmunoglobulin Variable RegionMembrane GlycoproteinsAntigens, CD20Immunoglobulin mu-ChainsLeukemia, LymphoidClone CellsFluorescent Antibody Technique