PARK7 and retinal degeneration: To establish the level of possible retinal degeneration and/or gliosis after DJ-1 loss, we searched for cell specific markers of Müller cells, retinal epithelial cells (RPE), rod photoreceptors, cone photoreceptors, retinal ganglion cells and microglia/macrophages [20,33,34] (Supplementary Materials Table S1).