TYMP and neoplasm: Proangiogenic M2Mφs are reported to secrete several angiogenic factors, such as VEGF, IL-8 (CXCL8), bFGF (basic fibroblast growth factor), TP (thymidine phosphorylase), and MMP (matrix metalloproteinase)11, 36, recolonizing and stabilizing tumour vasculature after irradiation, thereby supporting any remaining viable tumour cells.