mortality/aging
• enhanced lethality at young ages (less than 4 months of age)
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behavior/neurological
• spend more time in the closed arms of an elevated plus maze at 15 months of age compared to age matched controls
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• cross fewer segments and show a reduced latency to fall in a stationary beam test at 15 months of age
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• significant decrease in latency to fall in a wire grid assay at 3 and 15, but not at 6, months of age
• significant decrease in latency to fall in a coat hanger assay at 15 months of age
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• at 3, 6, and 15 months of age in an open field test
• activity decreases with age
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nervous system
• increase in brain length but not weight
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growth/size/body
• from 3 to 15 months of age
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homeostasis/metabolism