Figure 1.

Effect of EEHDW on HT-29 cell viability. Cells were treated with various concentrations of EEHDW for the indicated time periods. Cell viability was determined by MTT assay. The data were normalized to the viability of control cells (100%, treated with 0.5% DMSO vehicle). Data are means with SD (standard deviation; error bars) from at least three independent experiments. ^*P<0.05, versus untreated control cells; ^#P<0.05, versus cells treated for 3 h with the same dose of EEHDW. EEHDW, ethanol extract of Hedyotis Diffusa Willd.