Figure 6
The photocytotoxicity of partitioned fractions of Lonicera japonica extracts of CH27 cells. Cells were incubated with various concentrations of ethyl acetate fraction of the Lonicera japonica extracts or with 25 μg/ml partitioned fractions of Lonicera japonica extracts for 4 h and then irradiated with 0.8 J/cm2 fluence dose. The viable cells were measured by MTT assay. LjW: water fraction of the Lonicera japonica extracts; LjB: n-butanol fraction of the Lonicera japonica extracts; LjE: ethyl acetate fraction of the Lonicera japonica extracts. Results are expressed as the mean percentage of control ± SD. *** P < 0.001 compared to the control values.