Fig. 3.

Comparison of oxysterol levels at 2 h and 18 days post irradiation in the nuclear membrane fraction prepared from bovine lenses after exposure to 50 Gy IR. Levels of 7β-hydroxy cholesterol (A), 7-ketocholesterol (B) and 5,6 epoxycholesterol (C) were measured by LC-MS. General Linear Model Analysis of Variance followed by Tukey pairwise comparison post hoc test using time and dose as independent factors was applied for statistical analysis, *p< 0.05, **p<0.01, NS: not significant. n = 3.