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Real-time quantitative PCR analysis. (a) alpha-smooth muscle actin (α-SMA), (b) type I procollagen (Col I), (c) tumor growth factor beta (TGF-β1), (d) tissue inhibitor of metalloproteinase 1 (TIMP-1). Data are presented as mean ± SD. *p<0.05, **p<0.01 vs CDAA + DEN group.
