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To investigate whether extremely low frequency magnetic fields similar to those of transmission lines affect the testis tissue of mice.
40 mice (20 male, 20 female) were divided into an exposure and a sham exposure group (10 males and 10 females in each group).
Remark EMF-Portal: The employment of female mice does not make sense in the examined endpoints (testis).
|ばく露時間||continuous for 7 weeks (24 h/day)|
|チャンバの詳細||5 mice were kept in one cage, respectively|
|ばく露装置の詳細||electric field was induced by three-phase voltage lines which were connected to a secondary coil of the step-up transformer; lines were assumed to be straight, parallel to each other, with an equal distance (0.3 m); magnetic field was induced by three-phase current lines connected to a secondary coil of the step-down transformer and located beneath the insulating board; ground clearance of central line of the insulating board was 0.45 meter; primary coils of two transformers were respectively connected to two three-phase voltage dividers; mice cages were fixed at one side of B phase line (mid line)|
No significant differences in the serum level of gamma-glutamyltransferase were found between the exposure and the sham exposure group (remark EMF-Portal: no data given for the level of gamma-glutamyltransferase in the testis).
The histopathological examination of the testis revealed no differences between the exposure and the sham exposure group.
In exposed rats, the cell proliferation and the number of germ cells in the S-phase were significantly decreased compared to the sham exposed rats, while no difference regarding the number of chromosome sets was observed.