Conclusion: It was suggested that MMP-2 expression is increased by paracrine stimulation mediated by soluble factors originated from oral CAFs and MMP-9 expression requires direct cell-cell contact.

结论：MMP - 2表达增加可能受到源自口腔癌相关成纤维细胞可溶性因子的旁分泌介导，而MMP - 9表达可能需要口腔癌细胞与癌相关成纤维细胞的直接接触。

youdao

Without fixed phone and cell phone, they lost contact with outside world entirely.

没有电话和手机，就失去了与外界联系的方法。

youdao

Only use your cell phone to establish contact or for conversations lasting a few minutes, as the biological effects are directly related to the duration of exposure.

把手机用于保持基本联络，或只进行几分钟时长的通话。因为手机辐射对人的生理影响与通话时间长短相关。

youdao

"It appears that cell contact and landline contact is either down or so busy that we definitely cannot get through.

VOA: standard.2010.01.12

By cell/cell contact, I mean that there's a receptor in one cell that makes some kind of a chemical interaction with a receptor in another cell.

通过细胞之间的接触,我的意思是在一种细胞上的受体,能与另一细胞上的受体发生某种化学反应

耶鲁公开课 - 生物医学工程探索课程节选

Sometimes signals are transmitted between cells by cell/cell contact.

有时细胞与细胞靠互相接触进行信号传递

耶鲁公开课 - 生物医学工程探索课程节选

The probability of actually catching the flu or a bacterial infection as a result of cell phone contact is actually dependent on a number of factors how long the viruses or bacteria have been on the phone surface.

FORBES: Can Your Smartphone Spread The Flu?

"But their cell phone battery died, and contact was lost, " the department said in a news release.

CNN: See daring rescue of hiker

He had no human contact, just a cell phone charged by solar power.

FORBES: Magazine Article