The sham exposed sample was placed in the same incubator, at a different height level, with a metal plate between the two samples. An additional control flask was grown in a different incubator which was set to 37 °C.
Since the exposure was not evenly distributed over the whole range, the samples were subdivided into four groups according to their average SAR level.
Measurement and calculation details
The RFpower feeding the exposurecell was coupled by a directional coupler to an RF detector. The distribution of power density and SAR inside the exposurecell (including the incubator's wall effect) was computed by a finite element (HFSS) simulation code with a mesh resolution of ~1/6 of the wavelength in each medium and an accuracy estimated to be ±5%. For a 1 W input power computation, the maximum SAR in the culture is 24 W/kg, whereas the average power density is 9.4 W/kg. Results were supported by extensive temperature measurements.
Chou CK et al.
Comment on "Exposure of human peripheral blood lymphocytes to electromagnetic fields associated with cellular phones leads to chromosomal instability," by Mashevich et al. Bioelectromagnetics 2003;24(2):82-90.
Korenstein R et al.
Reply to the comment on "Exposure of human peripheral blood lymphocytes to electromagnetic fields associated with cellular phones leads to chromosomal instability".
Maes A et al.
Cytogenetic investigation of subjects professionally exposed to radiofrequency radiation.
Scarfi MR et al.
Exposure to radiofrequency radiation (900 MHz, GSM signal) does not affect micronucleus frequency and cell proliferation in human peripheral blood lymphocytes: an interlaboratory study.