Figure 2.

Effect of 7-β-OH-cholesterol on cell viability. Microglia were treated with various concentrations of 7-β-OH-cholesterol for 1, 2 or 3 days, then the viability of each treatment was determined. Results from Fig. 1 and Fig. 2 indicated that 25-OH-cholesterol was more toxic to these cells as compared with 7-β-OH-cholesterol.