Movie 3.

Time lapse movie of a 50% p.d. LL54<Abl^GFP; abl^null retina injected with CellMask to show cell outlines and rhabdomeres and with a representative tracked ommatidium false-colored to identify photoreceptors and IOPCs. Frames are re-aligned to keep the center of the tracked ommatidium constant. Framer rate: 5 min/frame; Duration: 90 min. Scale bar: 10μm. Related to Figure 5 and S6.