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Inhibition of mRNA expression of iNOS, COX-2 and IL-1β by phenolic compounds 5–7 from QGB. Activities were determined by RT-PCR at least three times. Concentration of LPS was 1 μM. Values bearing different superscripts in same columns are significantly different (*: p < 0.05, **: p < 0.01, ***: p < 0.001) (n = 3).
