Figure 2. The retinal ganglion cells were double labeled with Brn3a and NeuN in the same radial sections. Left: Brn3a signal (red); middle: NeuN signal (green); right: DAPI (blue). Arrows representative Brn3a-labeled retinal ganglion cells (RGCs) (red) and NeuN-labeled RGCs (green). All images were obtained at 40× magnification. Bar: 2 μm.