Fig. 2. The morphologies of Fgf3 mutant inner ears fall into types of increasing severity. Lateral views of paint-filled inner ears from E15.5 control (A,B) and Fgf3 mutant (C-I) mice. The percentage of each type among total mutants is indicated at the upper right. Asterisks and star (in I) indicate expected locations of missing structures. Ear side indicated by R (right) and L (left). Structures are labeled in the control left ear (A): aa, anterior ampulla; asc, anterior semicircular canal; cc, common crus; cd, cochlear duct; ed, endolymphatic duct; es, endolymphatic sac; la, lateral ampulla; lsc, lateral semicircular canal; pa, posterior ampulla; psc, posterior semicircular canal; s, saccule; u, utricle.