mortality/aging
• despite being viable at E13.5 to E17.5, all mice die by P0
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cellular
• increased number of telomere fragments, telomere duplication at chromatid arms and chromosome ends without telomere signals in mouse embryonic fibroblasts
• increase aberration in gamma-irradiated mouse embryonic fibroblasts
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• 2-fold increase in aberrant chromosome in mouse embryonic fibroblasts
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growth/size/body
limbs/digits/tail
• at P0
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