Breast Acini. Breast Acini. The acini of the breast glands contain secretory, epithelial cells with an outer layer of myoepithelial cells. Note the vacuolated.
Each breast is made up of 15-25 secretory lobes, embedded in adipose tissue. The acini empty into ducts, that are lined by cuboidal, or low columnar.
Acini cells are considered the "functional unit" of the breast; Several hundred acini cells are in the breast; TDLU refers to 30-50 acinar cells grouped together in a.