Fig. 8. The daughter cell of subapical neuroepithelial (NE) cell divisions that remains in the ventricular zone (VZ) reinduces Tis21-driven GFP expression. Total GFP fluorescence was determined in the daughter cells originating from a division in the subapical region of the VZ (Fig. 7d). For each of the time points (10-min intervals), the total GFP fluorescence in the daughter cell with a lesser integral of total GFP fluorescence over time was set to 100 (black line), and the total GFP fluorescence in the other daughter cell was expressed relative to this (red curve). The curve shows the moving average of two consecutive time points each. The red curve corresponds to the trailing daughter cell that remained in the VZ (Fig. 7d, arrows).