To determine whether chronic exposure to radiofrequency radiation from cellular phones increased the incidence of spontaneous tumors in rats.
Rats were randomly placed into three groups: Sham, FDMA exposure and CDMA exposure.
Frequency | 835.62 MHz |
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Type | |
Exposure duration | repeated daily exposure, 4 h/day, 5 days/week, over two years |
Exposure source | |
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Chamber | The design of the exposure equipment has been described in [Moros et al., 1998]. Four chamberettes designed for the exposure of 40 rats each were equipped with four carousels (pseudo-random placement) and four central (standard telecom) antennas providing the EMF signal. |
Setup | A rat was placed in a clear acrylic restraint cylinder (four different sizes) and a retainer piece was secured to the back of the device. Ten restraint devices were then arranged symmetrically around the antenna on a carousel in the same (initially randomised) sequence every day. Any partially filled trays (due to died or killed rats) were completed with equivalent phantoms. |
Sham exposure | A sham exposure was conducted. |
Frequency | 847.74 MHz |
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Type | |
Exposure duration | repeated daily exposure, 4 h/day, 5 days/week, over two years |
Exposure source |
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There were no significant differences among final survival days or body weights for either males or females in any group. No significant differences were found between treated and sham-exposed rats for any tumor in any organ. The authors conclude that chronic exposure to FDMA or CDMA radiofrequency radiation had no significant effect on the incidence of spontaneous tumors in rats.
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