Study type:
Medical/biological study
(experimental study)
Lack of promoting effects of chronic exposure to 1.95-GHz W-CDMA signals for IMT-2000 cellular system on development of N-ethylnitrosourea-induced central nervous system tumors in F344 rats.
med./bio.
By:
Shirai T, Ichihara T, Wake K, Watanabe S, Yamanaka Y, Kawabe M, Taki M, Fujiwara O, Wang J, Takahashi S, Tamano S
Published in: Bioelectromagnetics 2007; 28 (7): 562-572
Distance between exposed object and exposure source
30 mm
Chamber
The exposure apparatus was the same as applied for the experiment with 1.439-GHzEMF [Shirai et al., 2005], except for the length of the monopole antenna. The exposure box was 90 x 90 x 60 cm, the inside walls except for the ceiling being covered with electromagnetic absorber.
Setup
Ten rats were fixed individually in plastic tubes of four different sizes (ID: 4.0, 4.7, 5.5, and 6.2 cm) and placed on disk-shaped plates like a carousel with their noses at 30 mm from a resonant monopole antenna at the center. Each plate was 65 cm in diameter, with adjustable height supported by a center hollow cylinder pole, and the distance between the ceiling and the rat backs was 5 mm.
Shirai T et al.
(2005):
Chronic exposure to a 1.439 GHz electromagnetic field used for cellular phones does not promote N-ethylnitrosourea induced central nervous system tumors in F344 rats.
Ministry of Internal Affairs and Communications, Japan
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