Figure 4.

Images of rat joint tissues at week 6 stained by Hematoxylin and Eosin (A–C) and by Safranin O Staining (D–F) where A and D were from the normal control group, B and E were from the sham operation group, and C and F were from the OA group. Images of rat joint tissues at week 14 after drug treatment stained by Hematoxylin and Eosin (G–J) and Safranin O Staining (K–N) where G and K were from Drug A treatment group by Epimedii folium, H and L were from Drug B treatment group by Chuanxiong Rhizoma, I and M were from Drug C treatment group by Bushen-Huoxue, i.e., the combination of Epimedii folium and Chuanxiong Rhizoma, and J and N were from Drug D treatment group by the combination of glucosamine and Celebrex.