Mothods Scanning Electronic Microscope was used to examined ultrastructural changes of the cochlear hair cell and Auditory Brainstem Response (ABR) thresho lds were assessed.

• 方法 应用扫描电镜 (SEM)观察BALB/c小鼠耳蜗Corti器毛细胞的超微结构改变 ,测定动物ABR反应阈值。