Generation of ush2au507zebrafish. (A) Schematic representation of zebrafish and human usherin domain architecture. The u507 mark on zebrafish usherin indicates the region targeted by CRISPR/Cas9. (B) Sanger sequencing traces showed the ush2a gene sequence change in homozygous ush2au507 mutant zebrafish (c.2131_2203 + 73delinsCGGCGG) at the CRISPR/Cas9 target site. (C) Anti-usherin-C (red) and anti-centrin (green) immunostaining of retinal sections from wt and ush2au507 larvae (5 dpf). DAPI nucleic acid stain was used as a counterstain (blue). PAM, protospacer adjacent motif. INL, inner nuclear layer; OPL, outer plexiform layer; ONL, outer nuclear layer; dpf, days post fertilization. Scale bar = 10 μm.
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