Figure 4.

Immuno-electron micrograph detecting acetylated α-tubulin in axons and non-compact myelin. Acetylated microtubules were abundant in axons of mouse optic nerve as indicated by immuno-gold particles (black dots). In the adaxonal and abaxonal non-compact myelin compartment, acetylated microtubules were also present. Black and white arrow-heads point to corresponding immuno-gold particles in adaxonal and abaxonal non-compact myelin, respectively. On compact myelin, no immuno-gold was observed.