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Figure 3: Effects of quercetin on the inflammatory response in H2O2-treated H9C2 cells. The expressed levels of phospho-Akt (Ser-473), phospho-p38 (Tyr-180/182), Mn-SOD, phospho-STAT3 (Tyr-705), phospho-STAT3 (Ser-727), COX-2, and STAT3 in H9C2 cell were detected by immunoblotting. GAPDH served as a loading control.