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To investigate the effect of postnatal exposure to a 900 MHz electromagnetic field on the number of pyramidal cells in the Cornu Ammonis of the hippocampus in rats.
Female rats (12 weeks old) were assigned to a cage control (n=6), an exposure group (n=6) and a sham exposure group (n=6). All rats were sacrificed at the end of 16 weeks.
|ばく露時間||1 h/day for 28 days|
|Distance between exposed object and exposure source||1 cm|
|ばく露装置の詳細||antenna placed inside the tube cage|
|Sham exposure||A sham exposure was conducted.|
There was no significant difference in body weight between the exposure group compared to the cage control and the sham exposure group.
Dark cell density (=damaged cells) was significantly increased in the exposure group compared to the cage control and the sham exposure group. Postnatal exposure caused a significant decrease of the pyramidal cell number in the Cornu Ammonis of the exposure group.
Chronic exposure of 900 MHz electromagnetic fields may play a critical role in the neuronal development of the hippocampus.