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Ultrastructural analysis of photoreceptor outer segments in the ift122 mutant retina. A–H, electron microscopic images of sections in the wild-type (A and B) and ift122 mutant (C–H) photoreceptor cells at 4 dpf. EM images of sections perpendicular to outer segments in wild-type and mutant photoreceptors. Severely disorganized outer segment discs were observed in mutant photoreceptor cells. Arrows indicate outer segments and arrowheads in enlarged images point to outer segment discs.
