Study type: Medical/biological study (experimental study)

Lack of genotoxic effects (micronucleus induction) in human lymphocytes exposed in vitro to 900 MHz electromagnetic fields. med./bio.

Published in: Radiat Res 2003; 160 (2): 152-158

Aim of study (acc. to author)

To study the induction of genotoxic effects in human peripheral blood lymphocytes after exposure to electromagnetic fields used in mobile communication systems.

Endpoint

Exposure

Exposure Parameters
Exposure 1: 925 MHz
Modulation type: CW
Exposure duration: intermittent; 6 min on/3 h off, 14 on/off cycles of exposure, altogether 44 h
  • SAR: 1.6 W/kg
Exposure 2: 925 MHz
Modulation type: pulsed
Exposure duration: intermittent; 6 min on/3 h off, 14 or 8 on/off cycles of exposure, altogether 44 h or 24 h
  • SAR: 1.6 W/kg
Exposure 3: 900 MHz
Modulation type: pulsed
Exposure duration: repeated daily exposure, 1 h/day for 3 days
  • SAR: 0.2 W/kg

Exposure 1

Main characteristics
Frequency 925 MHz
Type
Waveform
Charakteristic
  • guided field
Exposure duration intermittent; 6 min on/3 h off, 14 on/off cycles of exposure, altogether 44 h
Modulation
Modulation type CW
Exposure setup
Exposure source
Chamber TEM cell with outside dimensions of 47.7 x 22.8 x 22.8 cm
Setup Two flasks (40 x 105 x 25 mm) were placed inside a vertically positioned TEM cell which was placed inside a cell culture incubator. The flasks were irradiated by a plane wave with the E-field (1 V/m) tangential to the bottom of the flask.
Additional info For each exposed sample, a control was also established and was kept in the same incubator containing the TEM cell.
Parameters
Measurand Value Type Method Mass Remarks
SAR 1.6 W/kg - measured and calculated - -

Exposure 2

Main characteristics
Frequency 925 MHz
Type
Charakteristic
  • guided field
Exposure duration intermittent; 6 min on/3 h off, 14 or 8 on/off cycles of exposure, altogether 44 h or 24 h
Modulation
Modulation type pulsed
Exposure setup
Exposure source
Parameters
Measurand Value Type Method Mass Remarks
SAR 1.6 W/kg - measured and calculated - -

Exposure 3

Main characteristics
Frequency 900 MHz
Type
Charakteristic
  • guided field
Exposure duration repeated daily exposure, 1 h/day for 3 days
Modulation
Modulation type pulsed
Exposure setup
Exposure source
Parameters
Measurand Value Type Method Mass Remarks
SAR 0.2 W/kg - measured and calculated - -

Reference articles

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Time of investigation:
  • after exposure

Main outcome of study (acc. to author)

No statistically significant differences were revealed in any case in terms of either micronucleus frequency or cell cycle kinetics.

Study character:

Study funded by

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