Fig. 1

Cytotoxic activity of SB1 and SB2 against various tumor cell lines. Cell viability was assessed in breast carcinoma (MCF-7) (a), colon carcinoma (HCT116) (b), lung carcinoma (A549) (c), urinary bladder carcinoma (T24) (d), and hepatocellular carcinoma (HepG2) (e). Normal human lung epithelial cells (WI-38) were included as a control (f). Data are presented as mean ± SD.