65. Additionally, CXCL2, a chemoattractant for myeloid-derived suppressor cells (MDSCs), suppresses the expansion and activity of anti-tumor effectors, such as T and NK cells 65-67. There are conflicting data regarding CXCL2 expression, with some studies attributing it to M1 macrophages, others to M2 macrophages 68 ,69, and some to both subsets 70. The gene discussed is CXCL2; the disease is neoplasm.