The expression pattern of MUC4/8G7 and MUC4/1G8 in intestinal-type IPMN-I (A-E) and gastric-type IPMN-L (F-K). Intestinal-type IPMN-I (A) showed MUC4/8G7 expression mainly in the cytoplasm of the neoplastic cells (B and C), whereas MUC4/1G8 expression was localized mainly at the cell apexes (D and E). Most of gastric-type IPMN-L (F) showed neither MUC4/8G7 expression (G and I) nor MUC4/1G8 expression (J and K). Note the expression of MUC4/1G8 at the vascular endothelium in the interstitial tissue (lower area of J). HE (A and F, Original magnification x100), MUC4/8G7 (B x100, C x400, G x100, I x400) and MUC4/1G8 (D x100, E x400, J x100, K x400).