Figure 8: Western blot assessment of collagen 1, runx2 protein of MG63 cells, and VEGF protein of HUVEC cells in the PLGA/nHA/CMs/ADM, PLGA/nHA, and control groups (normal cells without treatment) at predetermined times. (a, b, and c) The bands were quantitated by densitometry, and data are expressed as the ratio of aim protein to β-actin. indicates statistically significant difference compared with the control group .