Mitotic timing in a bubR1-E481K mutant neuroblast. bubR1-E481K mutant Drosophila larval neuroblast labeled with RFP-Spc25. The RFP-Spc25 channel corresponds to Fig. 4B. Images were acquired by confocal spinning disk microscopy. Frames were taken every 20 s for 5.61 min. The video is shown at 8 frames/s.