https://edrn.cancer.gov/data-and-resources/publications/18475301-1548-muc4-and-muc5ac-are-highly-specific-tumour-associated-mucins-in-biliary-tract-cancer/
MUC4 and MUC5AC are highly specific tumour-associated mucins in biliary tract cancer.
This is a publication by a member of the Early Detection Research Network.