title: Cell surface immunoglobulin. XVIII. Functional differences of B lymphocytes bearing different surface immunoglobulin isotypes.
abstract: Three populations of murine splenic B lymphocytes have been characterized previously (6, 7, 9) as those bearing only IgM, those bearing only IgD, and a population bearing both isotopes. These studies were designed to test the response of the IgM+ cells (IgM-only or IgM plus IgD) vs. the IgD-only cells to the B-cell mitogen, lipopolysaccharide. Results that after 1-4 days of culture, in the presence of mitogen, the IgM+ cells enlarge and elaborate an IgM polyclonal response. The IgD-only cells, in contrast, do not exhibit an IgM polyclonal response, but instead undergo blastogenesis and proliferation.
mesh_terms: D000818:Animals; D000888:Antibodies, Anti-Idiotypic; D000917:Antibody Formation; D001402:B-Lymphocytes / Q000166:cytology / Q000276:immunology*; D002469:Cell Separation; D003165:Complement System Proteins / Q000378:metabolism; D007072:Immunoglobulin D / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis / Q000096:biosynthesis; D008070:Lipopolysaccharides; D008213:Lymphocyte Activation; D051379:Mice; D011135:Polysaccharides, Bacterial; D014176:Protein Biosynthesis; D011947:Receptors, Antigen, B-Cell / Q000032:analysis*
chemical_list: D000888:Antibodies, Anti-Idiotypic; D007072:Immunoglobulin D; D007075:Immunoglobulin M; D008070:Lipopolysaccharides; D011135:Polysaccharides, Bacterial; D011947:Receptors, Antigen, B-Cell; D003165:Complement System Proteins