While patterns of CXCR2 in immune cells were not consistent with the patterns of immune cells induced by CXCL5, CXCR3 was highly expressed in T cells in the tumour microenvironment of PAAD tissue, which was in agreement with the induced patterns change of immune cells induced by CXCL9/10 (Figure 1E). Here, CXCL9 is linked to neoplasm.