Myosin is planar polarized and pulsatile in ingressing NBs. Time-lapse video showing an ingressing NB (cell in the center) expressing Sqh::GFP (myosin, green) and GAP43::mCherry (membrane outline, red). Notice the planar polarization of myosin at the cell junctions and periodic pulses of myosin assembly and disassembly coinciding with the ratcheted pattern of apical membrane loss. Video is displayed at 20 frames per second.
