(G, H) Increase in microglia activation in Grn-/- and Tmem106b-/-Grn-/- retina as indicated by IBA1 staining. The number of IBA1 positive cells per section was quantified. Data information: ONL: outer nuclear layer; INL: Inner nuclear layer; OPL: outer plexiform layer; IPL: inner plexiform layer; GCL: ganglion cell layer. 