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Fibrotic mediator proteins in BAL fluid. (A) TGF-β and (B) PDGFa proteins are elevated in both MWCNT- and MWCNT + ESAT-6–instilled mice. (C) IL-13 is significantly elevated by MWCNT + ESAT-6 only. Reported are the mean ± SEM values of n = 4–7 per group. ★P ≤ 0.05.
