Histochemical Localization of Acetylcholinesterase Activity in the Cochlear and Vestibular Ganglion Cells

Abstract

The localization of AChE activity was investigated in the cochlear and vestibular ganglion cells of the chinchilla inner ear with the electron microscope by Karnovsky's method. The reaction product was localized within the rough-surfaced cisterns of the E. R., including the perinuclear cistern, and in some cisterns of the Golgi complex. In a few myelinated nerve fibres and in most of the unmyelinated ones the reaction product was present along the axolemma. The reaction product was absent in the satellite and Schwann cells. The controls indicated that the reaction was due to AChE activity.