After shRNA-mediated knock down of CXCL17 of 79% (0.21-fold downregulated relative to control) in R-cells (Supplementary Fig. S5A), knock down cells showed an increased T cell infiltration rate (Fig. 2K,L), higher expression of T cell activation markers (Fig. 2M) as well as increased T cell-mediated cancer cell apoptosis (Supplementary Fig. S5B) compared to scrambled control cells. Here, CXCL17 is linked to cancer.