hematopoietic system
• on day 5 after L. monocytogenes infection, mutants show a slightly reduced number of activated (CD8+CD44+) T cells in contrast to wild-type, but on day 7, when peak numbers are found in wild-type, percentage of activated T cells is decreased ~50% in mutants
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• after infection with Listeria monocytogenes, no tetramer+ CD8+ T cells are observed after 7 days in null mice, while substantial cells are detected in wild-type
• in vitro, when splenocytes and hepatic leukocytes from mutants 7 days after infection stimulated with heat-killed bacteria, frequency and total numbers of Listeria-specific CD8+ T cells producing interferon gamma are reduced vs wild-type
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• splenocytes and hepatic leukocytes from infected mutants are able to lyse YAC-1 cells (NK targets) in vitro with reduced percentages compared to controls
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• in infected mutants, no H2-M3/LemA-specific response is detected after injection of B6 splenocytes pulsed with this peptide, but cytolytic activity to ovalbumin-coated target B6 cells is comparable to wild-type
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• 3 days after LM infection, splenocytes and hepatic leukocytes from mutants produce less nitric oxide in vitro than cells from littermates
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immune system
• on day 5 after L. monocytogenes infection, mutants show a slightly reduced number of activated (CD8+CD44+) T cells in contrast to wild-type, but on day 7, when peak numbers are found in wild-type, percentage of activated T cells is decreased ~50% in mutants
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• after infection with Listeria monocytogenes, no tetramer+ CD8+ T cells are observed after 7 days in null mice, while substantial cells are detected in wild-type
• in vitro, when splenocytes and hepatic leukocytes from mutants 7 days after infection stimulated with heat-killed bacteria, frequency and total numbers of Listeria-specific CD8+ T cells producing interferon gamma are reduced vs wild-type
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• in infected mutants, no H2-M3/LemA-specific response is detected after injection of B6 splenocytes pulsed with this peptide, but cytolytic activity to ovalbumin-coated target B6 cells is comparable to wild-type
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• reduced interferon gamma is detected in cultures of splenocytes from infected mice
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• response is reduced in mutants compared to wild-type mice
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• splenocytes and hepatic leukocytes from infected mutants are able to lyse YAC-1 cells (NK targets) in vitro with reduced percentages compared to controls
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• 3 days after LM infection, splenocytes and hepatic leukocytes from mutants produce less nitric oxide in vitro than cells from littermates
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• infection of mice with a sublethal dose of L. monocytogenes (LM), mutants show substantial higher bacterial burdens in the spleen and liver at early time points (3 and 5 days) compared to wild-type
• mice are more susceptible to infection at higher bacterial doses compared to wild-type
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homeostasis/metabolism
• 3 days after LM infection, splenocytes and hepatic leukocytes from mutants produce less nitric oxide in vitro than cells from littermates
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