Exogenous RvD1 treatment attenuated EAN Exogenous RvD1 treatment attenuated EAN. EAN rats were treated with RvD1 (5 μg/kg/d, i.p.) or vehicle (0.9% endotoxin-free saline) from day 10 to day 22 after immunization. Exogenous RvD1 treatment attenuated EAN. EAN rats were treated with RvD1 (5 μg/kg/d, i.p.) or vehicle (0.9% endotoxin-free saline) from day 10 to day 22 after immunization. A, Neurological signs of EAN and body weight were monitored daily (n = 6). B, Sciatic nerves of EAN rats were removed at day 22 for electron microscopy analysis and representative electron micrographs are shown. Arrows indicate axon demyelination (n = 3). C, Representative immunohistochemistry staining and semiquantification of inflammatory cell infiltration in the sciatic nerves of EAN rats (n = 3). D, mRNA levels of IFN-γ, TNF-α, IL-1β, IL-17, TGF-β, and IL-12p35 were measured in the sciatic nerves of EAN rats (n = 3). Representative data from at least two independent experiments are shown. Error bars indicate SEM. *p < 0.05. Bangwei Luo et al. J. Neurosci. 2016;36:9590-9603 ©2016 by Society for Neuroscience