injection of NPTyr-C9AP into mice bearing different melanomas, the intratumoral concentrations of CXCL9 and αPD-L1 were 11.11 and 36.82 ng g−1 in NPTyr-C9AP-treated Clone M-3 melanoma (Fig. 7a, b), and were 15.06 and 54.79 ng g−1 in NPTyr-C9AP-treated YUMM1.7 melanoma (Fig. 7f, g). This evidence concerns the gene CXCL9 and melanoma.