(O) Larval brains of control (ctrl; yw) and pr-set7716/Df at 24h, 48h, 72h and 96h ALH were labelled with Dpn and EdU. Data information: Yellow dotted boxes indicate the region of zoomed-in images (O). White arrows point to NSCs The central brain is to the left of white dotted lines O). Scale bars, 30 μm (I). 