The histological grades were significantly different between the convex and the concave side of the growth plate in the apex vertebrae (P<0.05).

顶椎椎体生长板凸、凹侧组织学分级差异有统计学意义（<0.05）。

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The analysis and calculation indicate that the image of a square for a wedge prism is in the shape of bell with a convex side rather than with a concave side.

分析和计算都表明，正方形物体经光楔所成的像是凸侧面的钟形而不是凹侧面的钟形。

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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）。

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