Compared to LF and HF Controls, we observed a significant increase in the expression of TLR2 mRNA transcript in the lungs of LF DEP (Fig. 9a, p = 0.002) and HF DEP (Fig. 9a, p < 0.001) exposed animals (Fig. 9a, f = 30.68 for exposure). This evidence concerns the gene TLR2 and hydrops fetalis.