Pigment Epithelium-Derived Factor (PEDF) Inhibits Wnt/<i>β</i>-catenin Signaling in the Liver.

Confirmation of fibrogenic cytokines with quantitative PCR showed that tgfb1 and pdgfa were significantly increased, and thbs1 , an activator of transforming growth factor-β, showed a trend toward increased expression ( Figure 4 B ).

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