mortality/aging
• embryos die before E11
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nervous system
• no motor neurons were detected in the r2-r3 region of developing mutant brains at E10.5
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• no sensory neuron axons were detected in the r2-r3 region of developing mutant brains at E10.5
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• the number of axons and cell bodies was reduced
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• the dorsal portion and the mandibular branch were absent, although the maxillary and ophthalmic branches appeared normal
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• proximal portion is smaller than in controls
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• no axonal connections were detected in hindbrain
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• proximal portion is smaller than in controls
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cardiovascular system
• cardiac trabeculae were not found
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• observed in some embryos, but the compact zone and outflow tract were normal
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muscle
• cardiac trabeculae were not found
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