Fig. 1

Cytotoxic effects of cryptolepine (A) and niclosamide (B) on HepG2 cells. The cells were treated with 0.5–8 μM cryptolepine or 4–32 μM niclosamide. The cell viability was assessed at 24, 48 and 72 h using an MTT-based assay. Data are presented as means and standard deviations of three independent experiments, with each experiment conducted in triplicate