Submandibular Gland

The mucous glands can be emphasized using histochemical staining procedures. The mucous secretory tubules □ in this section are stained with Alcian blue. In the image, the blue stain distinguishes them from the serous acini [2. The nuclei are stained with nuclear fast red. The combination of dyes in this preparation does not stain the interlobular connective tissue.

1 Mucous tubules

2 Serous acini

Stain: Alcian blue at pH 2.5, nuclear fast red; magnification: x 120

Electron Microscope Submandibular Gland

LO Ol

The sublingual gland is a mixed, i.e., seromucous gland. Mucous glands predominate. The intercalated and striated ducts are exceptionally short. Different segments cannot be defined for these ducts and histological preparations of them are rare.

This preparation shows the lobe of a sublingual gland with typical mucous tubules □. Most of them are cross-sectioned (cf. Figs. 383, 384, 386, 387). There is also fibrous, relatively coarse interlobular connective tissue [2 with several ducts [3. The ducts are lined by a two-layered pseudostratified columnar epithelium (see Fig.386).

1 Mucous glands

2 Interlobular connective tissue

3 Salivary ducts

4 Intercalated duct

Stain: azan; magnification: x 80

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