NOS2 and gastric carcinoma: In all the gastric carcinoma samples, varying degrees of iNOS expression were detected in endothelial cells (iNOS-E score: 5.88 ± 2.02; range 2–8) (Figure 1E) and tumor-associated stromal fibroblasts (iNOS-F score: 4.71 ± 1.61; range 2–8) (Figure 1F).