To assess the effect of simultaneous exposure to two types of radiofrequency electromagnetic field signals (CDMA and W-CDMA) on the immune system of rats.
| Exposure | Parameters |
|---|---|
|
Exposure 1:
848.5 MHz
Exposure duration:
continuous for 45 min/day, 5 days/week for up to 8 weeks
|
|
|
Exposure 2:
848.5–1,950 MHz
Exposure duration:
continuous for 45 min/day, 5 days/week for up to 8 weeks
|
Rats were exposed to CDMA alone or simulatenously to CDMA and W-CDMA.
| Frequency | 848.5 MHz |
|---|---|
| Type | |
| Exposure duration | continuous for 45 min/day, 5 days/week for up to 8 weeks |
| Exposure source | |
|---|---|
| Chamber | reverberation chamber (2,295 mm x 2,293 mm x 1,470 mm; thickness of the stainless steel walls 2.3 mm) |
| Setup | 5 cages were placed on the table located inside the exposure chamber; rats (two rats per cage) were housed in polycarbonate cages (420 x 260 x 180 mm) on hardwood bedding |
| Sham exposure | A sham exposure was conducted. |
| Additional info | position of the cages and turn of exposure (morning or afternoon) were changed every day |
| Measurand | Value | Type | Method | Mass | Remarks |
|---|---|---|---|---|---|
| SAR | 4 W/kg | average over mass | calculated | whole body | - |
| Frequency | 848.5–1,950 MHz |
|---|---|
| Type | |
| Exposure duration | continuous for 45 min/day, 5 days/week for up to 8 weeks |
| Exposure source |
|
|---|---|
| Sham exposure | A sham exposure was conducted. |
The data suggest that simultaneous exposure to CDMA and W-CDMA signals with a total SAR dose of 4 W/kg for 45 min/day for 8 weeks, which is a relatively high SAR level compared to the exposure levels for the human system recommended by ICNIRP, did not have any detectable effects on immune function in rats.
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