Effects of ox‐LDL on cell viability in HT‐22 cells. HT‐22 cells were treated with different concentrations of native LDL (100 μg/mL) or ox‐LDL (0, 12.5, 25, 50, 100 μg/mL) for 24 hours. Cell viability was determined by CCK‐8 assay. All the data were shown as mean ± SEM of three independent experiments. NS, no significant difference. *P<.05, **P<.01