What is "millivolts"

Usage examples of "millivolts".

But if one is placed outside and the other inside, a voltage of some 70 millivolts negative to the inside is measured.

The ionic composition of the inside of the cell is thus different from that outside, and as a result the inside of the cell is some 70 millivolts negative with respect to the outside.

Sodium ions enter and the membrane becomes depolarized, turning from 70 millivolts negative to as much as 40 millivolts positive.