Retinal ganglion cell numbers.
(A) Flatmount sections of a control (CO) and an RGA animal after cresyl stain. A lower neuron density was observed RGA flatmounts. (B) Mean retinal ganglion cell density in the control (CO) and RGA group at six weeks. (C) Exemplary Brn3-a stained retina cross-sections of a control (CO) and an RGA animal. (D). Mean number of Brn3-a+ retinal ganglion cells in both groups. (**, p<0.01; ***, p<0.001; scale bar in A: 10 µm and in B: 20 µm.).