This single smooth cell was isolated from a 3D EM (Gatan 3D) dataset. The irregular shape of the cell, embedded deep within the tunica media, does not have the smooth regular shape that is depicted in most textbooks.
Provided by Dr. Craig J Daly, School of Life Sciences, University of Glasgow.
For further information see:
http://authors.elsevier.com/sd/article/S2214854X19300469