Although there were no differences in the iNOs+/Arginase1− cells between the SFV/IFNg and SFV/Luc groups, interestingly the smallest tumor in the SFV/Luc group demonstrated the highest number of iNOs+/Arginase 1− cells (Pearson’s correlation coefficient r = −0.8407; p = 0.0372) (Supplementary Figure S5b). Here, NOS2 is linked to neoplasm.