growth/size/body
• mice weigh ~15% less at weaning compared to heterozygous and wild-type littermates
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hematopoietic system
• after exposure to 10-Gy ionizing radiation, thymocytes show increased apoptosis compared to wild-type or Trp53-null cells
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• at 6 weeks, thymocyte number recovered from mutants are reduced 2-fold compared to wild-type
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immune system
• after exposure to 10-Gy ionizing radiation, thymocytes show increased apoptosis compared to wild-type or Trp53-null cells
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• at 6 weeks, thymocyte number recovered from mutants are reduced 2-fold compared to wild-type
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neoplasm
• ~50% of mice develop tumors in the spleen or peripheral lymph nodes by 22 months of age, compared to no tumors in wild-type mice over that period
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cellular
• MEFs show increased survival and growth relative to wild-type when plated at low densities
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• after exposure to 10-Gy ionizing radiation, only 31.7% of CD4/CD8 double positive T cells survive compared to 45.5% in wild-type
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• after exposure to 10-Gy ionizing radiation, thymocytes show increased apoptosis compared to wild-type or Trp53-null cells
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• MEFs transfected with retrovirus encoding a puromycin resistance gene are highly sensitive to adriamycin-induced apoptosis compared to transfected wild-type cells
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• primary fibroblasts proliferated faster than wild-type but not as fast as Trp53-null fibroblasts
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endocrine/exocrine glands
• after exposure to 10-Gy ionizing radiation, thymocytes show increased apoptosis compared to wild-type or Trp53-null cells
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• at 6 weeks, thymocyte number recovered from mutants are reduced 2-fold compared to wild-type
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