For their part, scientists have puzzled over the genetic mechanism that kills off cells one by one until a leaf drops.

对于科学家来说，他们只是好奇于其中的遗传机制，一个细胞一个细胞地死去直到整片树叶凋零。

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Clinical experiment results show that this dividing method is quite effective for cast-off cells of urological organs.

临床实验表明，对泌尿系统脱落细胞的分割是很有效的。

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Our bodies slough off dead cells.

我们的身体会自然脱掉死细胞

《柯林斯英汉双解大词典》

They used light-sensitive molecules to turn on and off nerve cells in the deep brain structure of mice.

VOA: special.2009.04.07

It separates those duplicated chromosomes to two sides of the cell, physically separates them, and the cell itself pinches off to form two new cells.

双倍化的染色体,被分别拉向细胞的两边,物理性的分离了,细胞本身中央凹陷形成两个新细胞

耶鲁公开课 - 生物医学工程探索课程节选

The deformed cells block blood vessels and cut off the flow of oxygen to tissue in the body.

VOA: special.2009.12.16

With a standard Pap, a little brush scrapes off cells from the cervix, which are stored in a vial to examine for signs of cervical cancer.

NPR: Retooling Pap Test To Spot More Kinds Of Cancer

It might be able to selectively turn off brain cells that are overactive, as in epilepsy.

FORBES: Magazine Article

Scientists don't know for sure, but it looks likely that these protein clumps kill off nerve cells, causing dementia.

FORBES: A New Drug To Treat Alzheimer's?