IL1B and Sepsis: Remarkably, 10 h after sepsis induction, there were no differences in serum levels of IL-6 or IL-1β, or in fold induction of IL-6, IL-1β, KC, or MIP-2 mRNA expression in the lungs between vehicle- and KRN-pretreated CD1d KO pups, in contrast to what was seen in the wild-type neonates.