**Figure 7. **Assessment of multiple injections of RS1-expressing MSCs at P120. **A**: The total schisis areas from four quadrants were calculated and compared among three groups. **B**: Number of photoreceptor nuclei in the outer nuclear layer (ONL). **C**: A- and b-wave measurements from scotopic electroretinogram (ERG). **D**: Spatial frequency thresholds (cycles per degree) in the different treatment groups. Data are presented as the mean ± standard
error of the mean (SEM; *, p<0.05, n = 6).