behavior/neurological
• in a fear-conditioning paradigm, 9-month old mice exhibit significantly less freezing behavior on day 8 after training than wild-type littermates; however, cued-conditioning behavior is similar in transgenic and wild-type littermates
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• 9-month old male mice exhibit poor performance in the Morris water maze task in probe trials done 1 week after training commenced; mice show no quadrant preference for the former location of the platform, in contrast to wild-type mice, and significantly larger distance to platform travel compared to wild-type
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