CELL ULTKASriU C: Tl KE L\ >L\MMALS 



1% "^^ 



Fig. 6. Stereucilia on the surhice of epithelial ceils in the human ductus epididy- 

 mis. The stereocilia are long and slender and lack basal bodies. They do not seem to 

 have any mobility, but a few basal rootlets can be resolved. Magnification 10,800X 



a peculiar inner structure of fine longitudinal are all joined in the tip of the cilium and in 



filaments which are arranged in nine pairs the basal body below the cell surface (cross 



peripherally and two single in the center reference: ciliated epithelia ultrastructure). 



(Fig. 7). The filaments are contractile and Tubular invaginations. The ireeceWsuriace 



Fig. 7. Cilia on the surface of the cells of the rat trachea. Cilia are shorter and 

 coarser than stereocilia and display distinct fine inner structures which terminate 

 in the basal body (B). Magnification 31,500X 



97 



