Table 2: DNA damage in the brain of newborn rats after whole body exposure to 50 Hz and 0.5 mT MF for 30 days 24 h/day, assessed by comet assay. Each value was expressed as mean of 10 rats ± standard error.

GroupsGrade of damage
Type (0)Type (1)Type (2)
Type (3) Type (4) Types (2 + 3 + 4)

Control 4 9 . 3 ± 0 . 6 7 2 8 . 7 ± 2 . 1 9 6 1 5 . 3 ± 0 . 3 3 6 . 7 ± 0 . 3 3 0 2 2 ± 0 . 5 7
Exposed 1 7 . 3 ± 0 . 6 7 4 3 . 3 ± 2 . 3 1 1 9 . 7 ± 0 . 3 3 1 3 . 7 ± 0 . 8 8 6 ± 0 . 5 8 3 9 . 3 ± 1 . 7 6

, , Significant difference in comparison with the corresponding control at 𝛼 = 0 . 0 1 , 0.001, and 0.0001, respectively.