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Effect of rhein on NO production in LPS-stimulated macrophages.
Notes: Macrophages were stimulated with LPS (1 μg/mL) for 24 hours in the absence or presence of rhein (1, 5 or 20 μM). The production of NO was assayed in the culture media. Each value represents the mean ± SEM (*P<0.01 vs LPS; analysis of variance).
Abbreviation: SEM, standard error of the mean.
