FOXP3 and acute respiratory distress syndrome: These impaired changes observed in ACLF rats could be attenuated by the preadministration of a low dose of RvD1 before the induction of ALI, which was associated with the increased proportion of Treg cells in the spleen together with the increased gene expression ratio of Foxp3/RORγt and decreased mRNA level of Il‐17a and Il‐6 in the liver.