They are also found in kidney tubules, glandular ducts, ovaries, and the thyroid gland.

Mucus retention cysts occur when a glandular duct becomes blocked and is unable to secrete.

The hermaphroditic duct, a highly glandular duct of comparatively even diameter, traverses the greater portion of the first coil of the body to enter the accessory glands.

The staining of the epithelial cells is cytoplasmic, involving the basolateral and, to a lesser extent, the apical surfaces of the cells and EGF can also be seen in the mucus derived from the glandular ducts in many cases (Fig 3C and D).