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Effects of TL extract on collagen-I expression. Immunofluorescence study of collagen-I (a) and western blot analysis of collagen-I (b) in LX-2 cells stimulated with or without TGF-β1 and treated with TL extract. Actin was used as a loading control. ∗P < 0.05 indicates statistical significance from TGF-β1-treated group.
