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mRNA expression detected by reverse transcription-quantitative polymerase chain reaction. mRNA levels of (A) Smad7, (B) MMP-1, (C) TGF-β1, (D) α-SMA, (E) Smad2, (F) Smad3, (G) TβRI (H) Col I, (I) TIMP-1 and (J) Col III. *P<0.05 vs. BMSCs + HSCs, PBS + HSCs and Smad7 + HSCs groups.
