Figure 9.

Volumic visualization of an entire late telophase cell. (A) Each nascent nucleus is a regular disk (DNA, blue). (B) When observed on a stereo-pair of a polar view, each set appears with a large depression (less profound than during previous step) limited by a regular ledge with some radial furrows. (C) A median view showing that individual chromosomes are no longer visible on that face. (D) Sectioning of the set shows that the disk is a biconcave flat disk. (E and F) Transparency views confirming the central localization of the NORs (yellow) as a ring at the bottom of the depression (F). Bars, 2 μm.