Fig. 6

Effects of PTN on LPS-induced NO production in BV2 microglial cells. Cells were treated with the indicated concentrations of PTN (0.05 or 0.5 μg/ml) and/or with LPS (1.0 μg/ml) for 24 h. The data of the levels of NO in the media are expressed as the mean ± SEM. *P < 0.05 vs. cells treated with LPS. NO nitric oxide, LPS lipopolysaccharide, PTN pleiotrophin