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Fig. 1. A schematic diagram of the chicken inner ear from E3 to E7. Dotted lines
represent the plane of a cross section through the vertical canals, shown
above each stage. asc, anterior semicircular canal; cc, common crus; cd,
cochlear duct; ed, endolymphatic duct; fp, fusion plate; psc, posterior
semicircular canal; rd, resorption domain; vp, vertical canal pouch; A,
anterior; D, dorsal.