Sometimes you will see portions of gland with two cuboidal layers. You may call this "stratified cuboidal".
Sometimes the lower layer is myoepithelium, i.e., cells that contract and help squeeze the secretion out, as in breast and salivary gland. Other times, the effect is local.
This is sweat gland variant with two layers of cuboidal cells.
With your study partners, find:
Hotshots: We'll let you find, by yourself, the area where a tangential cut creates the appearance of more than two layers.
Kansas City University of Medicine and Biosciences