Study type: Medical/biological study (experimental study)

Whole-body exposure of radiation emitted from 900 MHz mobile phones does not seem to affect the levels of anti-apoptotic bcl-2 protein med./bio.

Published in: Electromagn Biol Med 2008; 27 (1): 65-72

Aim of study (acc. to author)

To investigate the anti-apoptotic bcl-2 protein in rat brain and testes after whole body exposure to irradiation emitted from 900 MHz cellular phones.

Background/further details

16 male rats were separated into a control and an experimental group. For the experimental group the phones transmitted speech for 20 minutes per day for one month.



Exposure Parameters
Exposure 1: 900 MHz
Modulation type: pulsed
Exposure duration: repeated daily exposure, 20 min/day, for 1 month

Exposure 1

Main characteristics
Frequency 900 MHz
Exposure duration repeated daily exposure, 20 min/day, for 1 month
Modulation type pulsed
Additional info

The mobile phones transmitted human speech from a tape to the base station.

Exposure setup
Exposure source
Distance between exposed object and exposure source 5 mm
Chamber The rats were confined in Plexiglas cages (20 cm x 10.5 cm x 10 cm) with ventilation holes, and the mobile phones were placed under the cages.
Setup Exposure began when the rats settled down to a prone position and selected a fixed location inside the cage spontaneously.
Sham exposure A sham exposure was conducted.
Additional info The same phones were placed under the control rats but they were turned off.
Measurand Value Type Method Mass Remarks
power 2 W peak value - - -
power 250 mW mean - - -
electric field strength 13.59 V/m mean measured - -
power density 0.047 mW/cm² mean measured - -
SAR 3.13 W/kg effective value calculated 1 g -
SAR 0.52 W/kg effective value measured and calculated whole body 0.29- 0.87 W/kg

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Investigated organ system:
Time of investigation:
  • after exposure

Main outcome of study (acc. to author)

The results showed that 20 minutes of the irradiation emitted from 900 MHz cellular phones did not alter anti-apoptotic bcl-2 protein in the brain and testes of rats.
It was concluded that bcl-2 may not be involved in the effects of irradiation on the brain and testes of rats.

Study character:

Study funded by

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