Fig. 6

Metformin treatment increases the proliferation of satellite cells in the skeletal muscle. a Representative double immunofluorescence staining showing that Pax7⁺ cells were also positive for BrdU at 7 days post-burn injury. Images were taken at × 40 magnification. Arrowheads indicate single-positive cells, and arrows show double-positive cells. b Quantification of Pax7⁺ cells that were also BrdU positive at 7 days post-burn injury