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Effects of HB on LPS-induced NO production in RAW 264.7 Cells. RAW 264.7 Cells were pretreated with different concentrations of HB (25, 50, and 100 μM) for 1 h before treatment with 1 μg/mL LPS. After incubation for 18 h, the NO production analysis was detected by Griess test. The values are presented as means ± SD of three independent experiments. * p < 0.05, ** p < 0.01, compared to the LPS-treated group.
