Relationship between gastric mucosal atrophy by endoscopy and non-ampullary duodenal epithelial tumors

Table 1 Classification of the mucin phenotype according to immunohistochemical stains

	CD10 (+) or MUC2 (+)	CD10 (-) or MUC2 (-)
MUC5AC (+) or MUC6 (+)	Gastrointestinal type	Gastric type
MUC5AC (-) or MUC6 (-)	Intestinal type	Unclassified

Each mucin phenotype was defined as expressed when the cell count was more than 10% positive. If none of these cell counts were positive, then, the mucin phenotype was defined as unclassified.