Method 58 cases with radicular cyst were treated with root canal therapy. The change of apical area was observed after root canal filling.

方法对58例根尖囊肿行根管治疗，术后观察囊肿病变区的变化。

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Root growth is mainly determined by cell division and subsequent elongation in the root apical area. Components regulating cell division in root meristematic cells are largely unknown.

根的生长主要取决于根尖区的细胞分裂和伸长，而调控根尖分生组织细胞分裂的成分很大程度上是未知的。

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