(A) The effect of 7,8-DHF on the proliferation of BMSCs after treatment for 24, 48 and 72 h. (B) The effect of 7,8-DHF on the ALP activity of BMSCs. Results were normalized with total protein quantity. (C) Representative images of TRAP-positive multinucleated osteoclasts after the treatment with 7,8-DHF for 5 d. (magnification: 100×, scale bar: 200 μm) (D)The average number of TRAP-positive multinucleated (nuclei ≥ 3) cells per cell. (D) The effects of 7,8-DHF on the cytoactive of BMMs. All results were expressed as mean ± SD. (A, E: n = 4; B-D: n = 3; *p < 0.05, **p < 0.01, ***p < 0.001, ****p < 0.0001, ns: not significant, one-way ANOVA).