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Age-dependent structural changes in normal and mutant retinas. Disease occurs earlier and progresses more rapidly in rcd1, while it is slightly delayed in xlpra2. The outer nuclear layer (ONL) in erd is preserved during the time course of the study. Scale bar: 20 μm; RPE = retinal pigment epithelium, PR = photoreceptors, ONL = outer nuclear layer, OPL = outer plexiform layer, INL = inner nuclear layer, IPL = inner plexiform layer, GCL = ganglion cell layer
