Fig. 1.1.4.06. Graphic reconstruction (i.e. manually shaded serial contour tracings) of mitochondrion, the outer membrane of which is widely opened into the channel of the smooth endoplasmic reticulum (arrow). Microtubules, neurofilament and a dark-cored vesicle are in the surroundings. Scale = 400 nm. (Rat, trigeminal nerve). Download the high resolution image.