There was a significant difference of the proliferative potential index(proliferating cell nuclear antigen, PCNA index) between convex side and concave side at the upper end vertebra(P<0.05).
在上终椎椎体生长板凸、凹侧软骨细胞PCNA增殖指数有明显差异且有统计学意义（P<0.05）。
The transverse processes of the cervical vertebra, slender osseous needle extend backwards reaching the posterior end of the centrum.
颈椎前端两侧的横突呈细针状，向后伸达椎体后端。
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