【摘要】 选用１８～２０日龄昆明种同源小鼠，经配对，随机分配于运动组和对照组。运动组练习８周后，同时处死两组小鼠，分别在大脑半球躯体运动区、脊髓腰骶膨大处取材。Ｎｉｓｓｌ法染色，光学显微镜观察。结果表明，运动组的大脑皮质运动区Ｖ层锥体细胞核仁大于对照组（Ｐ＜０．０１）；脊髓前角细胞胞核、核仁也大于对照组（Ｐ＜０．００１）。更多还原

【Abstract】 Male mice of Kunming strain of 18-20 days old were randomly divided into two groups, thetrained group and the control group. After & weeks of training, both groups were killed. The samples weretaken from the motor areas of hemispheres and the lumbosacral expanded locations. They were dyed withNissl method and observed under optics microscopes. The results showed that the nuclei in the V--layer pyramidal cells in the corticocerebral motor areas of the trained group were bigger than those of the control group(P<0. 01). The nuclei and the nucleoles in the spinal anterior horn cells of the trained mice were also biggerthan those of the control mice (P<0. 001 ).更多还原