CCL2 and breast cancer: In breast cancer these factors include, colony stimulating factors (CSF-1) [11], vascular endothelial growth factor (VEGF) [12] and many CC chemokines such as CCL2, CCL3, CCL4, CCL5 and CCL8, monocyte chemotactic protein - 1 (MCP-1) [6,13,14], see Table 1 for details.