No significant change in the number of RGC in adult <i>Pou4f1CKO</i> mice.

<p>Retina flat mounts of control and <i>Pou4f1CKO</i> mice were collected after tamoxifen injection. (A–C) Two weeks after tamoxifen treatment, RGCs labeled by TUJ1 (A) and ISL1 (B) and DAPI in GCL (C); (D–F) Four weeks after tamoxifen treatment, RGCs labeled by TUJ1 (D) and ISL1 (E) and DAPI in GCL (F); (G–I) Three months after tamoxifen treatment, RGCs labeled by TUJ1 (G) and ISL1 (H) and DAPI in GCL (I); (J–L) Six months after tamoxifen treatment, RGCs labeled by TUJ1 (J) and ISL1 (K) and DAPI in GCL (L); (M) Quantification results of each cell marker in 1,600 µm². Scale bar equals to 100 µm.