Figure 6: BAL cell expression of PPARγ is not further decreased by ESAT- 6. PPARγ expression was significantly (p ≤ 0.05) lower than that of sham controls in mice receiving MWCNT or MWCNT + ESAT-6. There was not a significant difference, however between MWCNT versus MWCNT + ESAT- 6 groups. There was no difference in PPARγ expression between sham controls and mice receiving only ESAT-6.