This takes place when molecules diffuse across the cell membrane by travelling through ... cells and potassium into the cells. This helps nerve cells to transmit nerve impulses.

In contrast, among the myelinated nerve fibers, axons are mostly covered by myelin sheaths, and transmembrane currents can only occur at the nodes of Ranvier where the axonal membrane is exposed.

The team injected 3E1, the anti-CADM1 ectodomain antibody, under the mouse skin to study its localization on nerve fibers ...