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. 2020 Feb 13;12(2):443. doi: 10.3390/polym12020443

Figure 1.

Figure 1

Reactive oxygen species (ROS) production and p47phox expression increased in the articular cartilage of human osteoarthritis (OA) knee joints. (A) Representative images of ROS-dependent dihydroethidium (DHE) fluorescence in human OA knee joints. (B) DHE staining density measured by using ImageJ software. (C) p47phox exhibited prominent expression at lesional sites, compared to non-lesional sites; immunohistochemical analyses show the expression levels of p47phox in knee cartilage at different sites. (D) p47phox immunostaining density quantified by ImageJ software; scale bar = 50 µm.