IL17A and neoplasm: Furthermore, photodynamic therapy in BALB/c Colo26-HA tumor-bearing mice rapidly induces the accumulation of TH17 cells in tumor-draining lymph nodes (TDLNs), and IL-17 promotes neutrophil migration into TDLNs across HEVs through preferential interactions between CXCR2 and CXCL2, but not CXCL1 (18).