FIG 5.

Effects of selected compounds (12.5 μM) on the proliferation and viability of OB and MSC after 2 h, 48 h, and 6 days (6d) of exposure, as determined by trypan blue staining. Bars and error bars represent the means and standard errors from eight repeats, respectively. The negative control was cell culture medium with a 0.5% ethanol solvent background, and the positive control was 0.05% phenol to show a cytotoxic effect. Percent proliferation is defined as (total number of viable cells in treated sample/total number of viable cells in solvent control) × 100. Percent viability is defined as (total number of viable cells [unstained]/total number of cells [stained and unstained]) × 100. Significant differences (*, P < 0.05; **, P < 0.01; ***, P < 0.001) from the results for the negative control are indicated.