Title: Submandibular gland 1
Stain Azan, human. Survey: on top capsule of dense connective tissue (blue) with septa dividing parenchyma of serous and mucous cells into lobules (comparable to the sublingual gland). At the bottom a large interlobular duct. Note white fat cells (adipocytes).
Title: Submandibular gland 2
Stain Azan, human. The submandibular gland consists of mixed glands, i.e. the serous cells outnumber the mucous cells (sero-mucous acini). Grosso modo the sublingual gland is comparable to the submandibular gland however the former contains more muco-serous acini.
Locally crescent-shaped groups of serous cells (demilunes of Giannuzzi) are localized close to mucous cells to form an acinus.
Intralobular ducts (left half) and thin connective tissue septa (blue) are present.
Title: Scheme of compound glands in the human oral cavity
A. parotid gland (uniform serous).
B. sublingual gland (mucous area).
C. sublingual gland (mixed area).
D. simplified scheme of compound serous/mucous gland.