Hepatocyte-specific gene expression analyzed by qRT-PCR in hUC-MSCs and hepatic differentiated hUC-MSCs for 6 days, 14 days and 26 days. Hepatocyte-specific gene expression was normalized to GAPDH expression, and the results are expressed relative to a value of 1 in the control hUC-MSCs. B: immunofluorescence of hepatocyte-specific gene expression in MSCs and hepatic differentiated MSCs. After induction for 14 days, hUC-MSCs can express AFP, ALB and CK18.