CCL5 and neoplasm: Other cytokines derived from ILC2s such as IL-5, have also been described to elicit an anti-tumor effect by recruiting eosinophils, which further attract CD4+ T cells and CD8+ T cells by producing chemokine (C-X-C motif) ligand 9 (CXCL9), CXCL10, chemokine (C-C motif) ligand 5 (CCL5) (via STAT1), CCL17 and CCL22 (via STAT6) (48, 56).