PPARG and infection: By 4 hrs post Δ-mce1 H37Rv-infection the transcription of the genes Ifnb1, Il12b and Pparg became significantly up-regulated compared to the uninfected pooled common reference (17.9 fold [P<0.001], 25.1 fold [P<0.001] and 0.7 fold [P = 0.001], respectively), whereas the transcription of Ccl24, Clec4a2 and Il13ra1 remained similar to that of the uninfected pooled common reference throughout out the time-course experiment (Table 2).