The effect of FMSs on the ALP activity of BMSCs. The deeper the color, the higher of ALP activity. a) Optical microscopic images of ALP staining of BMSCs-seeded FMSs in the osteogenic medium at day 4, and 7. b) Overall photograph of ALP staining of BMSC-laden FMSs in the osteogenic medium at day 4, and 7. c) The quantification of ALP activity in BMSCs. (n = 3, *, #, and $ indicate p < 0.05 in comparison with the GM group, the OM group, and the OM + Ful 1 group, respectively.).