Figure 5.

Rat kangaroo PtK₁ cell with separating chromosomes. Cultured cells were lysed and fixed as for Figure 2 and then embedded, sectioned, and imaged on a high-voltage electron microscope. Arrows labeled 1 and 2 indicate initial and secondary sites, respectively, of kinetochore microtubule (KMT) depolymerization during anaphase A. CHRs, chromosomes. Scale bar, 1 µm.