That's a lot of what stem cell biology is like - is about.

干细胞生物学的著作有很多

耶鲁公开课 - 生物医学工程探索课程节选

For this particular cell here it looks like it's about -75 millivolts, so the inside of the cell is a little bit more negative than the outside.

这个细胞的膜电位是-75毫伏,所以细胞内侧跟外侧比起来电势要低一些

耶鲁公开课 - 生物医学工程探索课程节选