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Transmission electron micrographs of the RPE/photoreceptor layer of a 37-day-old Rpe65−/−/Nrl−/− mouse, treated by intraperitoneal injection of 11-cis retinal, twice weekly, beginning at 7 days of age. Arrows: basal bodies of photoreceptor cilia. N, RPE nucleus; M, RPE melanosome; V, RPE apical microvilli. Scale bar, 1 μm.
