Fig. 15. Anterior pars plicata. Inset A. The basement membrane does not enter the extensive surface infoldings and lateral interdigitations of the nonpigmented epithelium. Note large numbers of desmosomal intercellular junctions (arrows). Main figure. A desmosome cut slightly obliquely showing intermediate filaments of the cell's cytoskeleton inserting into the dense plaque material. Inset B. Central dense core and plasmalemmal unit membranes of desmosome cut perpendicularly. (Main figure and inset B, X 104,000; inset A, X 10,800)