In experimental bleomycin-induced lung fibrosis, MSCs preconditioned with N-acetylcysteine reduced lung inflammation and fibrosis, BALF inflammatory cell counts, and levels of inflammation-associated mediators (IL-1β, IL-6, and TNF-α), which resulted in a significant improvement in the survival rate (Wang et al., 2013a). The gene discussed is IL1B; the disease is fibrosis.