POU4F2 and infection: The retinas were labeled by EdU injection at day 2.5 or 4.5 following infection with GFAP-Math5-Brn3b-GFP AAVs, and harvested 1 or 4.5 days later; or labeled by EdU at day 7, 14, 21, and 28 and harvested at day 30 (Supplementary Figure 3A).