Figure 4.
Effect of SEP extract on the viability of RAW264.7 cells and NO production in LPS prompted RAW264.7 cells. (A) The cells were treated with different concentration of SEP extract for 24 h and the cell viability was expressed as the percentage compared with the untreated (control) cell group. (B) The NO level was examined by measuring nitrite level production by Griess reagent and the nitrite production was expressed in micromolar (μM). Data represent mean ± SD of three independent experiments. **p < 0.01 and ***p < 0.001 vs. control.