In the conducting protion were oberved ciliated, musous goblet, basal, brush cells and nonciliated (Clara) cells, the main struc-tures participating in cohension among epithelial cells.

• 在通气部观察到了纤毛细胞、Clara细胞、基细胞和刷细胞等细胞类型并了解其各自的细胞特点.