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(A–C) Arg1 and iNOS protein expression and quantification by Western blotting after treatment of RAW 264.7 cells with 20 ng/mL TGF-β1 for 48 h. (D) IL-6 levels in conditioned media after treatment of RAW 264.7 cells with TGF-β1. Data are presented as mean ± SEM for four independent experiments. Two-tailed Student’s t-test: *** p < 0.005.
