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Fig. 5. Paint-filled inner ears from E16.5 mice. Superior (ssc), lateral (lsc), posterior (psc) semicircular canals, endolymphatic duct (ed), utricle (ut), saccule (sac) and cochlear duct (cd) are all clearly expanded in Foxi1-/- embryos (C,D) whereas Foxi1+/+ (A) and Foxi1+/- (B) inner ears appear normal. Scale bar: 1 mm.