Epithelial mucins, such as MUC13, are a family of secreted and cell surface glycoproteins expressed by ductal and glandular epithelial tissues (Williams et al., 2001 [PubMed 11278439]).[supplied by OMIM, Jul 2008].
Walsh, Young, Leggett, Williams, Jass, McGuckin: "The MUC13 cell surface mucin is highly expressed by human colorectal carcinomas." in: Human pathology, Vol. 38, Issue 6, pp. 883-92, (2007) (PubMed).