Fig. 2.3.04. The cytoplasm of the oligodendroglial inner loop (tongue) of myelin sheath can invaginate the axon (arrows) subsequently developing a worm-like labyrinth, significant in phagocytosis of degradated axoplasm. Scale = 300 nm. (Rat, thalamic ventrobasal nucleus.) Download the high resolution image (a); Download the high resolution image (b); Download the high resolution image (c); Download the high resolution image (d).