IL6 and fetal growth restriction: The results of the present study showed that gene expression of TNF-α, IL-1β, and IL-6 in the liver of NCUG piglets was significantly higher than in Normal piglets, and the NCUG liver exhibited a more pronounced vacuolated structure, which might be attributed to the extensive oxidative stress and suggested that NCUG-IUGR piglets were prone to liver inflammatory injury.