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- W1923005546 abstract "Heat-killed Neisseria meningitidis was found to be a potent mitogen for mouse splenic lymphocytes. Results obtained with different cell separation techniques indicated that the bacteria acted to selectively induce proliferation of B lymphocytes. First, partial or total depletion of T lymphocytes by treatment with various anti-T-cell antisera plus complement did not affect the ability of the remaining spleen cells to proliferate in response to N. meningitidis. Second, T lymphocytes purified by affinity chromatography through an immunoglobulin-antiimmunoglobulin-coated glass bead column were unresponsive to meningococcal stimulation, even when provided with a source of macrophages (irradiated or mitomycin C-treated spleen cells). Finally, treatment of spleen cells with soy bean agglutinin showed that, whereas the soy bean agglutinin-positive population (B-enriched lymphocytes) was highly responsive to stimulation by N. meningitidis, the soy bean agglutinin-negative population (T-enriched lymphocytes) displayed only a background level of proliferation when exposed to the bacteria. Isolated meningococcal surface antigens such as lipopolysaccharide (LPS) and outer membranes also possessed mitogenic activity and induced proliferation of B lymphocytes in a dose-dependent manner. Both LPS and non-LPS components contributed to the mitogenicity of outer membranes since the addition of outer membrane preparations to spleen cells from the low LPS responder C3H/HeJ mouse strain gave rise to a high level of proliferative activity." @default.
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- W1923005546 date "1983-11-01" @default.
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- W1923005546 title "Activation of murine B lymphocytes by Neisseria meningitidis and isolated meningococcal surface antigens" @default.
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- W1923005546 doi "https://doi.org/10.1128/iai.42.2.471-479.1983" @default.
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