Fig. 3

Sensitivity of various types of cell lines (7901, RKO and HPAEC) to the LRE541 extract. The three cell lines were incubated with increasing concentrations of the LRE541 extract for 48 h, and their viabilities were determined by the MTT method. *P < 0.05, **P < 0.01, ***P < 0.001 vs. the HPAEC cell line