Table 4: Mitotic index in bone marrow cells of control newborn rats and those exposed to 50 Hz and 0.5 mT MF for 30 days 24 h/day. Each value was expressed as mean of 10 rats ± standard error.

GroupMI/1000 cells
Control 2 6 ± 3
Exposed 6 5 ± 2 . 6 5

*Significant difference in comparison with the corresponding control at 𝛼 = 0 . 0 0 0 1 .