A trend toward reduced ALT and AST in mice lacking TLR9 or IRF3. There was a trend toward reduced serum (a) ALT and (b) AST in TLR9-KO, IRF3-KO, and TLR9-IRF3-DKO mice versus WT mice 24 hours after injection of LD. AST and ALT remained at background levels in mice injected with 5% dextrose vehicle. Graphs show mean ± SE. ALT, alanine aminotransferase; AST, aspartate aminotransferase; IRF, interferon regulatory factor; LD, liposome:DNA; TLR, Toll-like receptor; WT, wild-type.