目的观察雪旺细胞源神经营养因子在大鼠生长发育腰髓中的表达。

Objective to observe the expression of Schwann cell derived neurotrophic factor (SDNF) in developing lumber spinal cord of rats.

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目的：探讨成年大鼠坐骨神经创伤性华勒氏变性中雪旺细胞凋亡的存在及其时相性变化规律。

Objective:To investigate existence and regularity of changes of Schwann cell apoptosis in Wallerian degenerated sciatic nerve of rat, and evaluate its time-related feature.

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