these cells have a deep invaginated lumen , with ciliar arising from the cell surface in the lumen oriented either toward the base of the lumen or toward the epidermal surface these cilia , some of which extend slightly above the body surface , are presumed to be non-motile , as they lack ( dynein ? ) arms on the axonemal a tubules and lack striated rootlets .
C0007634
cells
C0699040
cell surface