IL10 and hydrops fetalis: When we analyzed the expression of IL-10, an anti-inflammatory cytokine, we observed that in comparison to the lungs from the LF (Fig. 4a-c) and HF (Fig. 4g-i) control animals, there was a significant increase in IL-10 in the lungs from both the LF DEP (Fig. 4d-f, p = 0.002), and HF DEP (Fig. 4j-l, p < 0.001) groups, F = 25.960 for exposure, as quantified in Fig. 4m.