root tip的用法和樣例：
例句
- The conclusion of this study was that potassium dichromate has obvious teratogenic effect on Vicia faba root tip cells.
結論是重鉻酸鉀對蠶豆根尖細胞具有明顯的致畸效應。 - The space environment had stimulating mitosis action on root tip cells.Other mutagens had inhibiting mitosis action.
空間環境促進根尖細胞有絲分裂活動，其它誘變因素均不同程度地抑制根尖細胞有絲分裂活動。
