Ciliated Epithelium (a)

Micrograph illustrating some of the ultrastructural features of the ciliated 
epithelium guarding the nephrostome. The cells bear cilia and microvilli.
Large intercellular spaces are found in the mid-region of the cell.

     ci    =   cilia
     cr    =   ciliary rootlets
     ko    =   kidney opening
     is    =   intercellular spaces
     nu    =   nucleus