GPT and Hepatic fibrosis: Comparing with the CCl4 treatment, the serum levels of aspartate aminotransferase (AST), alanine aminotransferase (ALT), and total bilirubin (TBIL) were significantly reduced by GSH treatment or ADSC therapy; importantly, the serum levels of ALT and TBIL could be further reduced by the combined treatment of GSH and ADSCs (n = 5) (Figure 6b), which means GSH enhances liver function recovery after ADSC therapy for liver fibrosis.