In this way, lysozyme confers antimicrobial activity to mucus.

The serous demilune is an artifact from traditional methods of preparing samples.

When samples were preserved by quick-freezing in liquid nitrogen and then fixed with osmium tetraoxide in acetone, no demilunes were found.

After sectioning the serous cells resembled the common demilune shape, and were so named.

[2] When the gland has this demilunar structure, it has mucoserous acini producing both serous and mucous secretions.