Fig. 7From: Fabrication and characterization of metformin-loaded PLGA/Collagen nanofibers for modulation of macrophage polarization for tissue engineering and regenerative medicineIn vitro polarization study. Relative mRNA expression levels of M2 markers (A) Arg-1 and (B) Fizz and M1 markers iNOS (C) and SOCS3 (D) in macrophages treated with MET-PLGA/Col NFs in various concentrations after 24 h incubation. (*P < 0.05, **P < 0.01; ***P < 0.001), Results are mean ± SEM (n = 3)Back to article page