[Variations of the stereociliary bundles of the outer hair cells in guinea pigs. A scanning electron microscopic study].

Variations of the stereociliary bundles of the outer hair cells in guinea pigs observed under scanning electron-microscope were reported. Changes including transposition and distorted outlines of the stereociliary bundles were distributed in all turns of the cochlear duct and all rows of the outer hair cells, but not in inner hair cells. The possible pathogenetic significance of the changes was discussed.