Viability and light microscopy images of HepG2 cells.

<p>(A) Dose-response curve of HepG2 cells treated with different concentrations of capsaicin for 72 h. (B) Cells were treated with different concentrations of capsaicin with or without 0.5 T SMF for 72 h and then the residual cell viability was measured by MTT assay. (C) Representative bright field images after treatment for 72 h. (D) SMF exposure setup. Data represent the mean ± SD. *<i>p</i> < 0.05 and **<i>p</i> < 0.01. Scale bar: 300 μm.</p>