Hair bundle of Guinea pig cochlea.

SEM of hair bundle from outer hair cell of organ of Corti in Guinea pig cochlea. Note the bundle comprises a number of cylindrical hair processes or stereocilia. These are organised in 3 rows to form a V-shaped structure. The 3 rows of stereocilia are of differing heights and arranged in a staircase configuration. Magnification X 35 000 Please credit: Dr Spiro Comis/ WTMPL