title: Pattern of usage of the VH4-21 gene by B lymphocytes in a patient with EBV infection indicates ongoing mutation and class switching.
mesh_terms: D000595:Amino Acid Sequence; D001402:B-Lymphocytes / Q000276:immunology*; D002460:Cell Line; D004252:DNA Mutational Analysis; D004854:Herpesvirus 4, Human; D017578:Immunoglobulin Class Switching; D007143:Immunoglobulin Heavy Chains / Q000235:genetics*; D007135:Immunoglobulin Variable Region / Q000235:genetics*; D007244:Infectious Mononucleosis / Q000276:immunology*; D008969:Molecular Sequence Data; D009154:Mutation; D016133:Polymerase Chain Reaction
chemical_list: D007143:Immunoglobulin Heavy Chains; D007135:Immunoglobulin Variable Region