Figure 1: Total F2-Isoprostane levels in lungs (A) and free F2-Isoprostane levels in plasma (B). Both pulmonary and plasma F2-IsoPs levels have been evaluated at 24 hr, 7 and 30 days after i.t. exposure to CdCl2, SiNPs, and SiNPs-Cd. Data are means ± standard deviation (SD). Differences between groups were evaluated using two-tailed t test and P value <0.05 was considered statistically significant (*).