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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.
| Group | MI/1000 cells |
| Control | 26 ± 3 |
| Exposed | 65 ± 2.65* |
*Significant difference in comparison with the corresponding control at α = 0.0001.
