The magnification of the figure is in proportion to the length of the 10 cm scale bar above.

Figure 67: Microtubules (Mt) and tubulin paracrystals (T) in canal ectoplasm of Assilina ammonoides (Gronovius). TEM micrograph, courtesy S. Reber-Leutenegger, x 24,000.
B: bacteria; M: mitochondria; Mt: microtubule; Pl: plasmalemma; T: tubulin paracrystals; V: vacuoles with or without fibrillar content (waste products?).