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Effects of HSYA on TβRII and TβRI expression in TGF-β1-treated MRC-5 cells. Cells were pretreated with 5, 15, or 45 μmol/L HSYA and/or 2 μmol/L SB431542 then stimulated with 10 ng/mL TGF-β1 for 24 h. Protein levels of TβRII and TβRI were measured by western blotting (A). Densitometric analyses of TβRII (B) and TβRI (C). Data are presented as mean ± SD, n = 4 per group. ΔΔp < 0.01 vs. normal group.
