MMP9 and tuberculosis: The genes (STAT1, NFKBIA, and HSPA1B) in the pathways of response to reactive oxygen species and response to oxidative stress were expressed at higher levels in the TB group than in the other groups (Figure 3(e)), whereas the genes (MMP9, TXN, and NCF1) associated with positive regulation of hematopoiesis were expressed at the lowest levels in TB (Figure 3(f)).