Figure 2.
Effect of PL on cell death induced by Aβ25–35 plaque in HT22 cells. HT22 cells were treated with PL (1–100 μg/mL) for 1 h and incubated (A) without or (B) with Aβ25–35 plaque (10 μmol/L) for a further 23 h. Cell viabilities were measured by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay 24 h after sample treatment and are presented as percentage of control. Values are mean ± standard error of the mean. *** p < 0.001 vs. control group, ### p < 0.001 vs. Aβ25–35 plaque group.