NO检测结果显示，添加激活素A培养的背根神经节上清NO分泌水平明显降低，与阴性对照组比较差异显著（P<0.05）；
The results of NO detection indicated that NO secretion level in the supernatant of cultured DRG decreased significantly in activin A group, compared to the control group(P<0.05);
研究设计：研究L5神经根受挤压伤后接受和不接受交感神经切除术时背根神经节（DRG）的疼痛表现和神经细胞的凋亡情况。
Study Design. An analysis of pain behavior and neuronal apoptosis in the dorsal root ganglion (DRG) following crush injury to the L5 nerve root, with or without surgical sympathectomy.
目的应用外源性表皮生长因子（EGF）观察神经损伤后对背根神经节感觉神经元超微结构改变的影响。
Purpose To observe exogenous epidermal growth factor (EGF) influence upon sensory neurons axotomy induced and change ultra structure of sensory.
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