Acetylcholinesterase Activity in the Vestibular Sensory Areas

S. Iurato Departments of Bioucoustics and of Histology and Embryology of the. University, Bari, the Laboratory of Electron Microscopy, Department of Anatomy, School of Medicine, Hannover and the Second Chair of Human Anatomy, University of Milan, Milan, Italy

L. Luciano Departments of Bioucoustics and of Histology and Embryology of the. University, Bari, the Laboratory of Electron Microscopy, Department of Anatomy, School of Medicine, Hannover and the Second Chair of Human Anatomy, University of Milan, Milan, Italy

E. Pannese Departments of Bioucoustics and of Histology and Embryology of the. University, Bari, the Laboratory of Electron Microscopy, Department of Anatomy, School of Medicine, Hannover and the Second Chair of Human Anatomy, University of Milan, Milan, Italy

E. Reale Departments of Bioucoustics and of Histology and Embryology of the. University, Bari, the Laboratory of Electron Microscopy, Department of Anatomy, School of Medicine, Hannover and the Second Chair of Human Anatomy, University of Milan, Milan, Italy

Abstract

The localization of AChE activity was investigated in the cristae ampullares, utricle and sac-cule of chinchilla inner ear with the electron microscope by Karnovsky's method. The reaction was positive on the plasma membrane of the efferent nerve fibres and endings. The reaction product filled the synaptic gap between these endings and the afferent dendrites and nerve chalices. The reaction product was absent at the junction between the hair cells and the afferent nerve endings and chalices. The controls indicated that the reaction was due to AChE activity.

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Acetylcholinesterase Activity in the Vestibular Sensory Areas

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Acetylcholinesterase Activity in the Vestibular Sensory Areas

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