Additional file 2: Figure S2. of TLR4-NOX2 axis regulates the phagocytosis and killing of Mycobacterium tuberculosis by macrophages

LPS dose-dependently (10−10,000 ng/mL) activates phagocytosis in both THP-1 and THP-1(A) cells incubated with M. tuberculosis-FITC at the ratio of 1:50 for 30 min. THP-1 and THP-1(A) cells were incubated with various concentrations of LPS (0–10,000 ng/mL) and subsequently infected with M. tuberculosis-FITC, isolated (top scatter plots), and analyzed by flow cytometry (bottom scatter plots). The proportion of cells containing high levels of FITC is indicated. (TIFF 82 kb)