Fig. 7From: Conversion of senescent cartilage into a pro-chondrogenic microenvironment with antibody-functionalized copper sulfate nanoparticles for efficient osteoarthritis therapyRelative fluorescence intensity calculated from the immunofluorescence-stained sections. (a) Col-2. (b) MMP-13. (c) p16ink4a. (d) HMGB-1. Data are presented as mean ± SD (n = 3). *p<0.05, **p<0.01, ***p<0.001, and ****p<0.0001Back to article page