Henriette Fiebig

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A set of 6 monoclonal antibodies is characterized reacting only with human T-cells but not with B lymphocytes. The antibody BL-T1 binds to the E receptor, being there on all mature T cells and on the majority of thymocytes. All respectively the majority of peripheral T cells but only subpopulations of thymocytes are recognized by the monoclonals BL-T2,(More)
This paper describes a new and easy to handle reusable minifermenter for high-density culture of hybridoma and other cells. The culture apparatus is composed of two modules: a 40 ml disposable cell culture and antibody production chamber (the 'production module') and a 550 ml medium reservoir (the 'supply module'). The two modules are separated from each(More)
The kinetics of HLA-DR antigen expression by human peripheral blood monocytes during cultivation in vitro was studied. Immediately after separation by glass adherence, about 60% of monocytes expressed DR antigens as judged by indirect fluorescence staining with a monoclonal antibody (BL-DR/1). Monocytes carefully depleted of lymphocytes, gradually lost(More)
Activated T cells in the peripheral blood of patients with systemic lupus erythematosus (SLE) were determined using monoclonal antibodies against activation antigens. Elevated percentages of HLA-DR+ T cells were found in association with active disease. In contrast, we observed an increase in IL-2 receptor-bearing T cells in only six out of 16 patients with(More)
Circulating lymphocytes were enumerated in 25 patients with Crohn's disease and in 43 healthy donors by immunofluorescent staining using monoclonal antibodies for T cell surface phenotypic markers (CD 3, CD 4, CD 8) or for surface immunoglobulin of B cells (mu-chain). Proportions of peripheral T cells and percentages of T cell subsets in Crohn's disease(More)
Studies were conducted into the incidence of secondary follicles in individuals without autoimmune disease. Thymic tissue specimens were obtained from 20 children, aged between 6 months and 14 years who had undergone cardiac surgery and had been chosen at random. These specimens were immunohistologically investigated, using monoclonal anti-B cell antibodies(More)
The CD45 protein tyrosine phosphatase is expressed in different isoforms that result from alternative splicing of three exons (A, B, and C) encoding regions near the N-terminus of the extracellular part of the molecule. We describe here a novel epitope on the N-terminal end of CD45 that is recognized by the MAb BL-TSub/2. Crossblocking studies showed that(More)