Among macrophages, the number of CD163+ macrophages was higher compared to that of iNOS+ macrophages, both in the tumor and peri-tumoral compartments and normal pancreatic parenchyma (92 vs. 5, p < 0.001; 66 vs. 2.5, p < 0.001, respectively), as shown in Figure 4. This evidence concerns the gene CD163 and neoplasm.