TNF and neoplasm: The previously observed association of TNF-R2, IL-1α, and MIP-1β levels with tumor size was confirmed but with a much stronger correlation strength than in the unseparated group (TNF-R2: r = 0.639, P = 0.012, versus r = 0.318, P = 0.022; IL-1α: r = 0.542, P = 0.027, versus r = 0.309, P = 0.026; MIP-1β: r = 0.682, P = 0.005, versus r = 0.306, P = 0.031) (Figs. 4D and 6D).