镍

That having a child fall asleep in your arms is one of the most peaceful feelings in the world.

我懂了。。。让一个孩子在你的臂弯入睡，你会体会到世间最安宁的感觉。

WEB2 mutant showed inappropriate entry into mitosis with unreplicated DNA indictive of S phase checkpoint deficiency.

这些结果提示，WEB2突变株能够携带未完成复制的DNA进入细胞分裂期，这是酿酒酵母S期检查点功能丧失的特征。