hematopoietic system
• a block in B cell development from IgM+ (T1 + T2) to IgMlow (T3) cells is seen
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• the number of mature recirculating B cells is reduced with about a 10-fold reduction in IgD+ B cells in the bone marrow and a 20-fold decrease in IgMlowIgD+ B cells in the lymph nodes
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• a reduction in peritoneal B2 cells but not B1 cells is seen
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• there is about a third reduction in the number of B cells that survive 36 hours of in vitro culturing compared to controls
• addition of Tnfsf13b (BAFF) to the culture does not elevate survival
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• the titers of IgG1, IgG2a, IgG2b, and IgG3 are reduced
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• immunization with NP-CG produces a significantly smaller increase in IgG1 titers in mutants compared to wild-type mice and no secondary NP-specific response is detected in mutants
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• immunization with NP-Ficoll produces a smaller increase in IgG3 titers in mutants compared to wild-type mice
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• the titer of IgM but not IgA is reduced compared to wild-type mice
• immunization with NP-Ficoll produces a smaller increase in IgM titers in mutants compared to wild-type mice
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immune system
• a block in B cell development from IgM+ (T1 + T2) to IgMlow (T3) cells is seen
|
• the number of mature recirculating B cells is reduced with about a 10-fold reduction in IgD+ B cells in the bone marrow and a 20-fold decrease in IgMlowIgD+ B cells in the lymph nodes
|
• a reduction in peritoneal B2 cells but not B1 cells is seen
|
• there is about a third reduction in the number of B cells that survive 36 hours of in vitro culturing compared to controls
• addition of Tnfsf13b (BAFF) to the culture does not elevate survival
|
• the titers of IgG1, IgG2a, IgG2b, and IgG3 are reduced
|
• immunization with NP-CG produces a significantly smaller increase in IgG1 titers in mutants compared to wild-type mice and no secondary NP-specific response is detected in mutants
|
• immunization with NP-Ficoll produces a smaller increase in IgG3 titers in mutants compared to wild-type mice
|
• the titer of IgM but not IgA is reduced compared to wild-type mice
• immunization with NP-Ficoll produces a smaller increase in IgM titers in mutants compared to wild-type mice
|