CXCL12 and neoplasm: Neutrophils are recruited at the tumor sites by several chemokine signals, such as CXCL12, CXCL8, CCL3 (MIP-1α), and CXCL6 (huGCP-2), or murine chemokines CXCL1, CXCL2, and CXCL5 [195].