Sections taken from comparable regions of drJ/+ (A,C) and drJ/drJ (B,D) inner ears. (A,B) In the dorsal otic region, Dlx5 expression is located in the rim of the canal pouches in both drJ/+ and drJ/drJ ears (arrows). (C,D) Dlx5 is only expressed in the lateral side of the cochlear duct region in drJ/drJ but not drJ/+ ears (arrowheads). Orientation and scale bar apply to all.