CX3CR1 and neoplasm: Here, we reported that MK3 expression was positively correlated with the majority of chemokines and chemokine receptors, such as CCL (2, 5, 8, 18, 22), CXCL12, CCR (1, 2, 5), CXCR2, CXCR4, and CX3CR1 (Figures 7C–E), which play pro-tumor roles.