Perilymphatic fibrocytes in the vestibule of the inner ear

A description is given of the fine structure of perilymphatic fibrocytes and their associated fibers in the vestibule of the inner ear in rats. The identification of the extracellular fibers as keratin is discussed in relationship to their fine structure and to biochemical and biophysical data of other workers. The numerous junctional complexes between fibrocytes are described and it is shown that these do not form zonula occludens as has been reported by other workers.