HIF1A and infection: In addition, HIF-1α stabilized MSCs led to a significant reduction in inflammatory indices such as BAL myeloperoxidase (MPO) and macrophage inflammatory protein-2 (MIP-2) levels 24 h after infection (Figures 2F,G, respectively), though there was not a significant reduction in the total BAL cell count (Figure 2E) or BAL albumin concentration (Figure 2H).