Studies in both humans and mice have shown that these immature monocyte precursors, as well as CD8+ T cells and natural killer (NK) cells are actively recruited into tumors via tumor-derived chemokines (e.g., CCL2/MCP-1, CCL3/MIP-1⍺, and CCL4/MIP-1β) (20). Here, CD8A is linked to neoplasm.