|Duty cycle||12.5 %|
|Repetition frequency||217 Hz|
|Distance between exposed object and exposure source||1 m|
|Chamber||three identical exposure chambers used - two for simultaneous exposures and one for sham exposure|
|Setup||cells placed in Petri dishes inside thermoregulated Plexiglas incubators which were slowly rotated and positioned each inside an anechoic chamber; temperature inside the incubator 37°C; layer of small glass balls with a diameter of 1.5 mm placed inside the Petri dishes for efficient heat conduction; rectangular horn antenna positioned above the incubator;|
|Sham exposure||A sham exposure was conducted.|
The exposure of cells to electromagnetic fields with SARs of 2 to 16 W/kg did not increase the DNA damage induced by 4NQO, whereas the number of DNA strand breaks increased with a temperature rise of at least 4 °C. In conclusion, no co-genotoxic effect of radiofrequency electromagnetic field exposure was found at levels of exposure that did not induce heating.