mortality/aging
• only a few mutant mice survive past weaning, with the oldest one reaching 7 months of age
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• although Mendelian ratios are recovered at E14.5-E18.5, only some viable mutant mice are born
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• only 4% of mutant mice reach weaning age
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vision/eye
• newborn mutant mice have open eyes but do not show any other overt defects
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cardiovascular system
N |
• at E12.5, mutant fetuses exhibit normal formation of the aorta and pulmonary artery, indicating that development of the cardiac outflow tract is unaffected
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liver/biliary system
N |
• at E15.5, mutant fetuses display normal liver architecture
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cellular
• similar to primary MEFs isolated from E12.5 Juntm1(Junb)Wag homozygotes, these mutant MEFs do not enter premature senescence and show increased proliferation relative to Juntm1Wag cells, but do not proliferate as fast as wild-type cells
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