Fig. 4

Effects of SE on skeletal muscle fiber size in db/db mice. a Cross-sectional area of muscle fibers, and (b) muscle fiber size. The scale bar is 20 μm. The data were presented as mean ± SD. N + : db/m +  + saline; NC: db/db + saline; PC: db/db + metformin; SE200: db/db + stevia extract 200 mg/kg BW; SE500: db/db + stevia extract 500 mg/kg BW; SV: db/db + stevioside 40 mg/kg BW. ^### p < 0.001 vs. N + ; ^* p < 0.05 vs. NC