Figure 1.

Immunohistochemical staining for platelets and CD34 protein in pancreatic carcinoma. (a–d), Platelet–endothelial cell interactions in pancreatic carcinoma. Positive antiplatelet antibody glycoprotein IIb/IIIa staining (a, c) and antiplatelet antibody CD42b staining (b, d) were observed in intermediate (a, b) and small (c, d) vasculature (magnification × 200). (e, f) Microphotograph of pancreatic carcinoma stained using the anti-CD34 antibody. Arrows indicate microvascular. Note that the microvascular density is higher in tissues possessing platelet-positive vasculature (f) compared to tissues without platelet-positive vasculature (e) (magnification × 400). (A color version of this figure is available in the online journal.)