Cite this page: MUC4. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/stainsmuc4.html. Accessed February 25th, 2017.
Definition / General
- Transmembrane or membrane bound mucin that provides a protective layer of mucus
- Normally acts as barrier to apical surface of epithelial cells, playing a protective and regulatory role
Positive Staining - Normal
- Tracheobronchial mucosa, colon, stomach, cervix and lung; normal salivary glands
Positive Staining - Disease
- Pancreatic, colonic, pulmonary and gastric carcinoma