The electricity comes from a small power supply placed under the skin in the chest.

VOA: special.2010.10.26

If you get bacteria under your skin, if you get a cut and somehow that cut gets - bacteria gets inside there, the bacteria can reproduce on their own.

如果你皮肤里有细菌,而你又割伤了自己,并让细菌进入了伤口,细菌自身就可以繁殖

耶鲁公开课 - 生物医学工程探索课程节选

Paul's face was white with thin blue veins under the skin.

VOA: special.2009.04.04

In addition,the battery placed under the skin may require a replacement.

VOA: special.2009.02.03

The skin is said to look bright green under ultraviolet lighting.

VOA: special.2009.06.23

"We took isolated skin biopsies from laboratory mice, exposed those isolated skin biopsies to temperatures of 43 degrees or 48 degrees, and then we looked at what was being released from the skin under those conditions."

VOA: standard.2010.05.04