Figure 2. The cellular EGFR expression percentage of different treatment groups in vitro assessed by flow cytometry.

The dynamic EGFR cellular expression percentage after treatment of different concentrations of As₂O₃ (0 µM, 0.5 µM, 2.5 µM, 5.0 µM) varied with time (*p<0.05, **p<0.01). All experiments were carried out in triplicate; each point represents the mean ± standard error values.