Resveratrol inhibits LPS-stimulated iNOS mRNA expression and NO production. N9 cells, murine primary microglial cells, or astrocytes were incubated with 0.5 μg/mL LPS in the presence or absence of different concentrations of resveratrol (RV). iNOS mRNA was examined by RT-PCR after 8 h incubation (A); NO in supernatant was measure by the Griess reaction after 24 h incubation (B). Results are presented as mean ± SD for 3 independent experiments. **P < 0.01 compared with medium control or treatment with 50 μM RV alone. ## P < 0.01 compared with treatment with 0.5 μg/ml LPS.