Telomerase is an enzyme that is produced only in cells that are actively dividing.

端粒酶是一种只在活跃分裂的细胞中产生的酶。

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Nothing happened when they turned on the light in cells in an area of the brain called the subthalamic nucleus.

VOA: special.2009.04.07

They're everywhere in cells throughout your body and they are responsible for lots of the biochemistry of cell/cell interaction and signaling.

它们在身体各处的细胞中都有,并负责很多细胞间的相互作用,及信号转导的生化过程

耶鲁公开课 - 生物医学工程探索课程节选

Retroviruses, for example, can only insert - can only transduce and express their DNA in cells that are dividing.

就以逆转录病毒为例,它们只能在分裂阶段的细胞里,转导并表达自己的基因

耶鲁公开课 - 生物医学工程探索课程节选

Because it develops only in cells that are maturing, it can be grown only in living mammals.

FORBES: Cornering A Killer

He asked whether 24-hour television and telephones in cells would be reflected in government policy.

BBC: Minister Kenny MacAskill rules out phones in prison cells

Mr McConnell admitted, in mentioning phones in cells, he was being "a wee bit reformist".

BBC: A television in a cell at Barlinnie Prison, Glasgow