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Effects of RRE treatment on the expression of (a) cellular proteins iNOS and COX-2, (b) their mRNAs, and (c) HO-1 in RAW 264.7 cells. Cells were treated with (a, b) LPS alone or with LPS and RRE for 24 h and (c) RRE alone for 6 h. β-actin served as a control. Results are representative of three independent experiments. ∗∗ p < 0.001 was calculated from comparing with LPS-stimulation value.
