526580.fig.004a
(a)
526580.fig.004b
(b)
526580.fig.004c
(c)
Figure 4: Cell viability assay for surfactin C-15 on HeLa cell line. The cell line was treated by different concentration of surfactin for (a) 16 h, (b) 24 h, and (c) 48 h with IC50 of 86.9, 73.1, and 50.2 μM, respectively.