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.

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结论：从未退变的椎间盘分离的纤维环细胞能在体外分化为脂肪细胞、格根包尔氏细胞、软骨细胞、神经元及内皮细胞。

Conclusions Anulus fibrosus cells isolated from nondegenerative intervertebral discs can differentiate into adipocytes, osteoblasts, chondrocytes, neurons, and endothelial cells in vitro.

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马迷走神经干上，从神经根起，到食管裂孔处，整个神经干全长均有细胞分布。

Cells are distributed on the whole length of the vagus nerve trunk of the horse, from the nerve root to the hiatus oesophagus.

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