mortality/aging
• animals die prenatally
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• embryonic development arrest occurs at around 8.5dpc
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embryo
• the anterior posterior axis of the mutant embryos was not able to further elongate after 7.5-8.5dpc
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• neural tube closure was not observed in mutant embryos by 9.5dpc
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• mutant embryos had only 6-12 somties at 9.5dpc, which is the somite number for the normal embryos at 8.5dpc
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• although the somite structures were visible, they appeared disorganized
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nervous system
• neural tube closure was not observed in mutant embryos by 9.5dpc
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