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TGF-β1 upregulated MMP-9 and TIMP-1 protein expressions in JEG-3 with increasing of TGF-β1 concentrations. (A) Western blot assay of MMP-9 and TIMP-1 protein expressions in different concentrations of TGF-β1 in the JEG-3 cells. (B,C) MMP-9 and TIMP-1 protein expression. *P<0.05 when compared with TGF-β1 0 μg/l; #P<0.05 when compared with TGF-β1 100 μg/l.
