Research Article

Ameliorative Effect of Curcumin Nanoparticles against Monosodium Iodoacetate-Induced Knee Osteoarthritis in Rats

Figure 10

Photomicrograph showing immunostaining results of matrix metalloproteinase-1 (MMP-13) expression in cartilage tissue in the (a) normal control group, (b) MIA-treated group, and (c) MIA+CUR-loaded PLGA NP group. Stained cells (brown) were counted, and the percentage of positive cells is expressed as error of the mean (SEM), where and .