title: Variable-region gene analysis of B-cell subsets derived from a 4-year-old child. Somatically mutated memory B cells accumulate in the peripheral blood already at young age.
mesh_terms: D000367:Age Factors; D016175:B-Lymphocyte Subsets / Q000276:immunology*; D001773:Blood Cells; D002675:Child, Preschool; D004252:DNA Mutational Analysis; D005803:Genes, Immunoglobulin; D006801:Humans; D007132:Immunoglobulin Isotypes / Q000235:genetics; D007135:Immunoglobulin Variable Region / Q000235:genetics*; D007156:Immunologic Memory; D008969:Molecular Sequence Data; D009154:Mutation; D014066:Palatine Tonsil / Q000166:cytology / Q000276:immunology
chemical_list: D007132:Immunoglobulin Isotypes; D007135:Immunoglobulin Variable Region