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(A–C) Protein levels of p-SMAD2, SMAD2/3, and p-SMAD3. (D) RNA level of NKILA. (E,F) Nuclear translocation of SMAD2/3 visualized by immunofluorescence and quantified with Image-Pro6.0; scale bar = 50 μm. #P<0.05 versus the control group. *P<0.05, **P<0.01 versus the IL-1β group; n =3.
