Light micrograph of a section of a human sublingual salivary gland. The two sublingual salivary glands are found below the tongue, and secrete mostly mucus, as well as some serous fluid and amylase enzyme into the mouth to aid mastication and begin the digestion of starch into sugar. They are divided into lobules each consisting of predominately mucus-secreting units (acini - white) and a few serous secreting units (pink), both of which are continuous with secretory ducts. Connective tissue (blue) runs between the lobules carrying blood vessels, nerves and excretory ducts. Magnification: x200 when printed at 15cm wide.