hAMSCs protect against APAP-induced acute liver injury through regulating KCs in vivo. Mice were administrated with hAMSC and APAP administration as described previously. Liposome was added through intraperitoneal injection. Liver injury was evaluated in terms of liver histopathology (A), serum ALT, and AST (B). Data are shown as mean ± SEM from 3 independent experiments. *, P<0.05, n=6 for each group. hAMSC, human amniotic mesenchymal stromal cell; APAP, Acetaminophen; ALT, alanine aminotransferase; AST, aspartate aminotransferase.