Figure 3: Effect of DBT extract prepared from Radix Astragali and Radix Angelicae Sinensis at a ratio of 5 : 1 on (a) matrix calcium deposition and (b) numbers of total calcified nodules formed in the osteoblast cultures at various concentrations of DBT, as determined by von Kossa stain. Results are expressed as percentage of control (, , and versus control). Arrows demonstrate deposition of mineralized matrix.