Additionally,Cxcl2, also known as MIP2-α, a chemokinetypically secreted by monocytes/macrophages and a powerful chemoattractant forpolymorphonuclear leukocytes involved in many immune responses, including wound healing,cancer metastasis, and angiogenesis, was overexpressed in these leukemia-initiatingcells. Here, CXCL2 is linked to cancer.