Study type: Medical/biological study (experimental study)

935 MHz cellular phone radiation. An in vitro study of genotoxicity in human lymphocytes med./bio.

Published in: Int J Radiat Biol 2006; 82 (5): 339-346

Aim of study (acc. to author)

To study the effects of radiofrequency irradiation applied alone or in combination with x-rays on genotoxicity in vitro in human lymphocytes. Combined exposures were used to examine whether radiofrequency irradiation might act epigenetically by reducing the fidelity of DNA repair of DNA damage caused by a well-characterized and established mutagen.

Background/further details

1-min x-rays exposure (1.0 Gy) was given immediately before or after the radiofrequency irradiation.
The experiments were performed in two different laboratories (in Italy and UK).



Exposure Parameters
Exposure 1: 935 MHz
Modulation type: pulsed
Exposure duration: continuous for 24 h

General information

Blood samples were exposed at two SAR values, alone or combined with a 1-min exposure to 1.0 Gy of 250 kVp X-rays given immediately before or after the RF exposure.

Exposure 1

Main characteristics
Frequency 935 MHz
  • guided field
Exposure duration continuous for 24 h
Modulation type pulsed
Additional info

GSM basic signal

Exposure setup
Exposure source
Chamber waveguide apparatuses installed in tissue culture incubators with humidified atmospheres of 5% CO2 in air
Sham exposure A sham exposure was conducted.
Measurand Value Type Method Mass Remarks
SAR 1 W/kg - - - -
SAR 2 W/kg - - - -

Reference articles

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Time of investigation:
  • after exposure

Main outcome of study (acc. to author)

No effect of radiofrequency irradiation alone could be observed for any of the endpoints. In addition, radiofrequency exposure did not modify any measured effects of the x-radiation.
Within the experimental parameters of the study no genotoxic or epigenetic effects from the radiofrequency signal was found.

Study character:

Study funded by

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