To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 6B Animated reconstruction of the ER in a small myelinated axon showing cisternae at branch points and free ended ER tubules. Axonal endoplasmic reticulum is very narrow Mark Terasaki J Cell Sci 2018. 131:None-None; doi: 10.1242/jcs.210450 Download Original Video