Figure 6. Measurement of the outer nuclear layer of the retina in transgenic and wild-type mice. A: Retinas of a wild type (left panel) and of a PGK-Groenouw transgenic (right panel) mouse stained with hematoxilin-eosin. The bars indicate the outer nuclear layer (ONL) of the retina. The pictures were taken at a 600X magnification. B: ONL and outer plus inner nuclear layer (INL-ONL) of retinas from control nontransgenic (Ctl) and PGK-Groenouw transgenic (Tg) mice at 16 months of age were measured and quantified in the graph.