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Fig. 10. Bile duct development and C/EBP
. The portal environment
induces suppression of C/EBP
expression, which leads to downregulation
of hepatocyte-specific genes and upregulation of Hnf6 and
Hnf1b genes. The deposition of basal laminar components, expression
of DBA- and SBA-binding sites, and suppression of HNF4 expression are not
downstream of the action of C/EBP
. Jag1 and Notch2
mRNA expression might be downstream of C/EBP
. CK, bile duct-specific
cytokeratin.