Figure 2. Normal retinal structure is visible in tg21 nob mice. A: Retinal cross-sections obtained from 6-week old non-transgenic (left) and tg21 nob (right) littermates. The appearance of the WT and tg21 nob retinas is comparable. B: Thickness of individual plexiform or cellular layers was assessed in WT and tg21 nob retinas. There was no significant difference observable in any retinal layer. Bars indicate mean (± S.D. of 4 mice). Abbreviations: ONL represents the outer nuclear layer; OPL represents the outer plexiform layer; INL represents the inner nuclear layer; IPL represents the inner plexiform layer; GCL represents the ganglion cell layer.