XCL1 and neoplasm: Additionally, NK cells are capable of secreting chemokines such as C-C motif chemokine ligand 5 (CCL5), X-C motif chemokine ligand 1 (XCL1), and X-C motif chemokine ligand 2 (XCL2) to recruit conventional type 1 dendritic cells (cDC1) to tumor sites, promote their differentiation and survival through FLT3 ligand, and synergistically contribute to the enlistment and stimulation of CD8+ T cells [4].