M1 TAMs release reactive oxygen species, nitrogen intermediates, and inflammatory cytokines (e.g., IL1b, IL6, IL12, IL23, and TNF) that kill cancer cells; however, M2 TAMs release a variety of growth factors (e.g., epidermal growth factor [EGF], fibroblast growth factor [FGF], and vascular endothelial growth factor [VEGF]), that promote growth and vascularization of the cancer mass [15-18]. Here, IL1B is linked to cancer.