Fig. 5

Treatment with chitosan (Cs) and curcumin (Cn) NPs enhanced muscle regeneration in glycerol-injured rat muscles. a Light micrographs of rat tibialis anterior (TA) muscles from non-injured muscle (negative control), glycerol-injured (positive control), muscle treated with Cs-50, − 200, and − 400 μg, and Cn-5, − 20, − 40 μg. HE stain. b Treatment with Cs and Cn NPs increased the average myotube diameters. c Treatment with Cs and Cn NPs shifted the distribution of myotube diameters towards higher values. Data are expressed as means ± SD, NS, not significant, * indicates significant difference from glycerol-injured muscle, # indicates significant difference between treatment groups and significant difference is indicated (P < 0.05)