title: The proliferation rate of T and B lymphocytes in cerebrospinal fluid.
abstract: An immunocytochemical method is presented by which individual proliferating T and B lymphocytes can be detected in the cerebrospinal fluid (CSF) of patients with inflammatory and neoplastic diseases of the central nervous system. The absolute numbers of proliferating T and B lymphocytes were approximately equal, so that only a minority of the strongly prevailing T-cell population proliferates in the CSF during the immune process. The highest proliferation (25.7%) was found within the small subset of activated, i.e. cytoplasmic immunoglobulin-containing, B lymphocytes. This provides further evidence that these cells are not the terminally differentiated plasma cells of classical cytology but progenitor cells capable of further proliferation. B-cell lymphomas could be easily identified. The detection of abnormally proliferating cell subsets could help in the differentiation of opportunistic infection from leukaemic infiltration.
authors.affiliation: Neurologische Klinik, Georg-August-Universität, Göttingen, Federal Republic of Germany.
authors.forename: R S
authors.initials: RS
authors.lastname: Thomas
authors.forename: W
authors.initials: W
authors.lastname: Beuche
authors.forename: K
authors.initials: K
authors.lastname: Felgenhauer
mesh_terms: D001402:B-Lymphocytes / Q000276:immunology*; D001973:Bromodeoxyuridine; D002555:Cerebrospinal Fluid / Q000166:cytology* / Q000276:immunology; D005455:Fluorescent Antibody Technique; D006801:Humans; D007136:Immunoglobulins / Q000276:immunology; D007150:Immunohistochemistry; D008213:Lymphocyte Activation; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D007136:Immunoglobulins; D001973:Bromodeoxyuridine