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To study the effects of whole body exposure to 1.95 GHz on rat testes.
Five week old animals were divided into three groups of 24 each and exposed for five weeks (from the age of 5 to 10 weeks, corresponding to reproductive maturation in the rat).
|ばく露時間||continuous for 5 h/day, 7 days/week during 5 weeks|
|ばく露装置の詳細||90 cm x 90 cm x 40 cm exposure boxes with inside dimensions of 70 cm x 70 cm x 34 cm covered on the inside with 6 cm thick planar RF absorbers, except for the ceiling, which was made of metal mesh and covered with a 4.2 mm thick translucent acrylic plate; a turntable covered with a 2 mm thick reflector plate was placed inside the box, with which the EMF exposure to the front side including the testis was increased; four 200 mm x 190 mm acrylic cages, housing 1 rat each, cylindrically arranged in the exposure chamber; two antennas covered with a ABS resin cap, crossing at a right angle and with a spacing of 40 mm hanging from the ceiling in the center of the exposure box|
|Sham exposure||A sham exposure was conducted.|
There were no differences in body weight gain or weights of the testis, epididymis, seminal vesicles, and prostate among the groups. The number of sperms in the testis and epididymis were not decreased in the electromagnetic field exposed groups. The testicular sperm count was even significantly increased with the 0.4 W/kg SAR. Abnormalities of sperm motility or morphology and the histological appearance of seminiferous tubules, including the stage of the spermatogenic cycle, were not found.
In conclusion, under the present exposure conditions no testicular toxicity was evident.