Time-lapse images of dynamic astral microtubules in a HU-arrested (S-phase) WT (WT-Tub1) cell with microtubules labeled with GFP-Tub1 and their plus ends enhanced with Bik1-3GFP. Images were captured at 4-s intervals and represent composite maximum projections of seven z-planes spaced 0.75 µm apart. Video plays at 10 fps and encompasses 5.4 min.