Fig 1: (A) Standard curve of the OCN content assessed using ELISA to calculate the expression of osteocalcin following treatment with EF or TSG over 7 days. (B) Effects of TSG on the OCN content were assessed in MSCs (n=6) treated with TSG (0–25 µg/ml) for 7 days. #P<0.05 vs. 0 µg/ml group; *P<0.05 vs. 50 mg/l EF group. OCN, osteocalcin; MSCs, mesenchymal stem cells; TSG, tetrahydroxystilbene glucoside; OD, optical density; EF, epimedium flavonoid.