nervous system
• the hippocampus of a 9 week old mutant mouse was found to be enlarged
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• the brain of a 9 week old mutant mouse was found to have a severe deficit of Purkinje cells
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hearing/vestibular/ear
• auditory brainstem response (ABR) testing revealed that, although mutant mice have a normal auditory threshold, their response latency is prolonged
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behavior/neurological
• mutant mice exhibit moderate ataxia at 3-4 weeks of age, which is more pronounced by 5 weeks
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