BAp90 is localized in the proximal plates and right fibers (df´s).

  Ultrastructural localization of BAp90 by immunogold labeling of isolated cytoskeletons (preembedment). A, B: consecutive longitudinal sections through a basal apparatus. The proximal plates (pp, arrowhead) are labeled. C: preimmune control. D: longitudinal section through a basal apparatus. The visible proximal plate of bb no. 1 (arrowhead) is decorated with gold particles. E, F: two serial cross sections through a basal apparatus. Labeling with anti-BAp90 is restricted to the proximal plate (arrowhead) G: oblique section through a basal apparatus revealing the right fiber (df, arrow) and d-roots with their associated smaf. Labeling is visible over parts of the df (arrow) and pp (arrowhead). H: preimmune control. I: cross section through the basal apparatus. The df (arrow) is labeled.