Analysis of invasiveness and tumor-associated macrophages infiltration in solid pseudopapillary tumors of pancreas

Figure 2 Invasion group showed increased tumor-associated CD68-positive macrophage infiltration compared with capsule group by immunohistochemical analysis. A-F: Immunohistochemical-stained imaging and analysis of tumor (A-C) and peritumor (D-F) infiltrated with CD68-positive macrophages in representative patients from the capsule (A, D) and invasion (B, E) groups. N: Normal pancreas tissue. ^bP< 0.01; ^dP < 0.0001.