Fig. 2

Effect of NCTD on cell viability. HCT116 (a) and HT29 (b) human colon cancer cells were seeded in 96-well plates with 2000 cells/well, respectively. After 24 h, cell culture media were replaced with 200 μL complete media containing serial concentrations of NCTD to treat the cells within the time of period indicated. The viable cells were measured by the fluorescent signal as described in the Material and Methods Section. The experiments were repeated for three times