Pseudo-coloured scanning electron micrographs of individual outer and inner hair cell bundles from clarinet mice at P8 and P16, showing that gross morphology of OHC and IHC bundles is similar between Clrn2+/+ and Clrn2clarinet/clarinet mice. Representative images from the mid region of the cochlear spiral are shown and close-up views illustrate the three full rows, tallest (red), middle (blue) and short (yellow), of stereocilia in IHC and OHC hair bundles. At P8 and P16 (upper panels in A and B), the three stereocilia rows are observed in Clrn2clarinet/clarinet OHCs (A) and IHCs (B), although the shortest and middle row of IHC stereocilia appear less prolate compared to controls. (C,D) Distribution of individual stereocilia measures across genotypes at P8 and P16. 