Salivary gland. Coloured light micrograph of a section through a submandibular salivary gland, one of a pair of salivary glands situated beneath the base of the tongue. The glands are divided into numerous lobules by stretches of connective tissue (orange). The pink secretory cells produce the main components of saliva, including mucous to lubricate the mouth and enzymes to break down carbohydrates when chewing food. Magnification: x80 when printed 10cm wide.