Alkaline phosphatase activity by hFOB 1.19 cells; untreated hFOB 1.19 cells (control), hFOB 1.19 cellstreated Quercus infectoria and hFOB 1.19 cells-treated pamidronate after 1, 3, 7, 10, and 14 days of incubation. The values of the bars represented mean (SD) of three independent experiments. * indicates significant difference between the three groups within the same day (P < 0.05) by one-way ANOVA and Tukey’s test. Days that share the same letter show a significant difference (within same group) (P < 0.05) by one-way ANOVA and Tukey’s test.