Fig. 8From: LPS-preconditioned mesenchymal stromal cells modify macrophage polarization for resolution of chronic inflammation via exosome-shuttled let-7bEffects of LPS pre-Exo on wound inflammation in diabetic rats for 3 days. a Macrophage phenotype distribution of the wound sites. Immunofluorescence staining for iNOS (M1 green), Arg1 (M2 red), and nucleus (blue). Scale bar 50 µm. b Western blotting analysis for the TLR4/NF-κB/STAT3/AKT signal pathwayBack to article page