Expression of miRNAs in the liver and extrahepatic bile ducts (EHBDs). Expression levels in the liver and EHBDs of the same miRNAs depicted in Figure 4 during postnatal development. Expression of miRNAs was normalized against U6 miRNA, followed by fold change calculations using expression levels of adult livers. *P < 0.05, **P < 0.01, ***P < 0.001. Values are expressed as mean ± SEM.