title: B-cell malignancies: origin and extent of clonal involvement.
mesh_terms: D001402:B-Lymphocytes / Q000276:immunology*; D002454:Cell Differentiation; D002478:Cells, Cultured; D002999:Clone Cells; D006801:Humans; D007136:Immunoglobulins / Q000235:genetics; D007945:Leukemia, Lymphoid / Q000276:immunology*; D008223:Lymphoma / Q000276:immunology*; D011289:Preleukemia / Q000276:immunology
chemical_list: D007136:Immunoglobulins