cuboid cell

The external root sheath appears empty with cuboid cells when stained with H&E stain.

Assuming a rectilinear grid consisting of rectangular cuboid cells, the scalar particle properties are interpolated to the cell centers while the vector properties are interpolated to cell faces.

The testa is 0.2-0.3 mm thick, with all its cell walls somewhat lignified, some of them with distinct thickening; its tegmen consists of an outer fibrous, lignified layer four to ten cells thick, with a lignified endotegmen composed of contiguous cuboid cells, with strongly thickened radial walls.