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Histology of a normal retina and a Royal College of Surgeons (RCS) retina at postnatal day 90 (P90). At P90, the IS + OS, ONL and OPL are almost completely degenerated. Note: GCL: Ganglion cell layer, IPL: inner plexiform layer, INL: inner nuclear layer, OPL: outer plexiform layer, ONL: outer nuclear layer, and IS + OS: inner and outer segments.
