Figure 12.

(A) Low-magnification view of a whole embryo showing the Golgi after the 10th cleavage. The scattered spots in the cytoplasm have become a single aggregate in each cell. By focusing through the embryo, these aggregates were seen to be located at the apical side of each nucleus. This organization is first seen after the ninth cleavage. Bar, 10 μm. (B) Mitosis of apical Golgi. Images were obtained every 17 s during the 10th cleavage. Images shown are at 4-min 15-s intervals. The Golgi spreads from its compact organization and then becomes diffuse as the cell goes through mitosis. The Golgi then returns to its original organization after the cell has cleaved. Bar, 5 μm.