Intercalated duct

The intercalated duct, also called intercalary duct(ducts of Boll), is the portion of an exocrine gland leading directly from the acinus to a striated duct. The intercalated duct forms part of the intralobular duct. This duct has the thinnest epithelium of any part of the duct system, and the epithelium is usually classified as "low" simple cuboidal.

They are found in both the pancreas and in salivary glands.