nervous system
• reduced elongation
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• in older mice
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• shorter intermodal lengths at 3, 6 and 16 weeks
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• older mice exhibit very mild disturbances in myelination such as onion bulb profiles with supernumerary Schwann cells compared with control mice
• older mice exhibit increased number of Schmidt-Lanterman incisures compared with control cells
• however, young mice exhibit normal
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• retarded development of maximum value
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• at 3 and 6 weeks
• however, conduction velocity is normal by 16 weeks
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behavior/neurological
N |
• at 16 weeks, mice exhibit normal hind paw withdrawal response after mechanical stimulation or noxious thermal stimulation
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• at 3, but not 16, weeks
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integument
N |
• at 16 weeks, mice exhibit normal hind paw withdrawal response after mechanical stimulation or noxious thermal stimulation
|