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Poly E inhibits interferon-induced STAT1/STAT3. MDA-MB231 and MCF-7 cells were treated for 24 h with Poly E (20 ng/µl) in the presence or absence of IFN-α or IFN-γ. Cell extracts were coimmunoprecipitated with STAT1 or STAT3 antibody and analyzed for STAT1 and STAT3 association by western analysis.
