Biochemical analyses. (A) Alanine aminotransferase (ALT); (B) aspartate aminotransferase (AST); (C) alkaline phosphatase (ALP); (D) cholin esterase (CHE); (E) total bile acids (TBA); (F) total bilirubin (TBIL). Group I: injured, non-transplanted; Group II: injured, transplanted with normal hPMSCs via the jugular vein; Group III: injured, transplanted with X-ray-treated hPMSCs via the portal vein; Group IV: injured, transplanted with normal hPMSCs via the portal vein. Data are presented as means ± SD. The dotted line represents serum biochemical results of surviving pigs in Groups II and III.