Figure 7: Effects of Danshen on DMPO levels in liver and spleen homogenates. In addition to testing cytokine and NO production, the tissue homogenates were also measured for DMPO levels which indicate oxygen free radicals in tissue homogenates. Data for 0% Danshen ( of 5 separate experiments), 0.5% Danshen ( of 2 experiment), 1% Danshen ( of 3 separate experiments), and 2% Danshen ( of 3 separate experiments) are shown as mean ± SD; *(for liver) **(for spleen) indicate statistically significant difference compared to the 0% Danshen group.