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Effects of quercetin on NF-κB p65 and ERK1/2 signaling pathway in LPS-induced BMECs. BMECs were treated with 100 μg/ml of quercetin in the presence of 1 μg/ml of LPS for 6 h. The immunofluorescence for NF-κB p65 and ERK1/2 (red) was performed, and the nuclear dye 4′, 6-diamidino-2-phenylindole (DAPI; blue) was used. Scale bar = 50 μm.
