目的：总结23例儿童（平均年龄11．1岁）重度先天性脊柱侧凸采用改良哈氏棒椎弓根螺钉的治疗结果。

Objective:To summarize the result of 23 cases of severe congenital scoliosis children(average 11.1 years) with the modified Harrington rodpedical screw system.

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在幼叶、成叶和树皮中重度遮荫的TSB活性大于轻度遮荫的，在根中则是轻度遮荫的大于重度遮荫的。

In young leaves, mature leaves and bark, TSB activity of heavy shading was higher than that of light shading, however, in root, a reverse result was showed.

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上下颌第三磨牙均以单根或融合根多见（66％，64％），50％以上的牙根为重度弯曲；

The roots of third molars of Hun in Jiangsu region were single or fused mainly(66%, 64% ) and more than 50% of the roots with severe bending.

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