Figure 2.

Effect of Rg1 on cell viability. Cells (5 × 10⁵) were treated with Rg1 (0, 50, 70, and 90 μg/mL) for 24 h first and then incubated in media with (model) or without (control) H₂O₂ (100 μmol/L) for an additional 4 h. Live cells were measured by the MTT assay using absorbance of formazan in cell lysates. All data are presented as mean ± S.E. (n = 6). Bars with different letters were significantly different (P < 0.05).