Fig. 7. Phase micrographs of a time-lapse series showing cytoplasmic blebbing in a single crane fly primary spermatocyte after treatment with wortmannin. Blebbing (arrows) is observed at the poles of the cell. The illustrations are at (h:min:s): 17:10:37, 17:13:15, 17:14:47, 17:14:57, 17:15:44 and 17:18:02. Bar, 10 µm.