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Inhibitory effect of PSE on the expression of iNOS and COX-2. The cells were pretreated 1 μg/mL LPS for 1 h and treated with 10 and 50 μg/mL PSE for 17 h. Western blot analysis was performed to confirm the effect of PSE on the expression of proinflammatory proteins (a). Ratios of iNOS (b) and COX-2 (c) are presented as the mean ± SD from three independent experiments. p value < 0.05 was considered statistically significant by Duncan's test.
