Spindle dynamics in a bubR1-KEN neuroblast. bubR1-KEN mutant Drosophila larval neuroblast labeled with GFP-tubulin (green; top left) and RFP–BubR1-KEN (red; top right). Merged images are shown in the bottom left panel. Corresponds to Fig. 1 F. Images were acquired by confocal spinning disk microscopy. Frames were taken every 20 s for 13.2 min. The video is shown at 8 frames/s.
