Mucous

Mucus is typically produced from cells found in mucous glands, and may also originate from mixed glands which contain both serous and mucous cells. It is a viscouscolloidal gel containing water (90–95%), inorganic salts, antimicrobial enzymes (such as lysozymes), antibodies especially immunoglobulin A, and glycoproteins such as lactoferrin and mucins, which are produced by goblet cells in the mucous membranes and submucosal glands. Most of the mucus in the body is produced in the gastrointestinal tract.