IL2 and Pleural effusion: Thus, we examined the levels of Th1 cytokines (IFN-γ, IL-12p70 and IL-2) in plasma (HD, n = 15; LTBL, n = 11; LTBH, n = 14; TB, n = 11) and pleural effusion from TP patients (n = 10) by Luminex platform.