Animals were housed in groups of six to seven in polycarbonate cages (W 40 x L 25 x H 7 cm) with no metal parts. They were RF or sham exposed in the same room as the cage controls in two identical radial waveguides. The waveguides were 4 m in diameter with a vertical plate distance of 8 cm in the region of the cages and below 6 cm toward the center to produce a well-defined field distribution. RF-absorbers were installed at the outer boundaries of the units to reduce reflections and standing waves.
Setup
Twenty-four cages per unit were placed at an equal distance from the center and covered with trapezoidal lids (three cages per opening) with wire mesh. The signal was connected to the cone antenna of one unit via a black box (blind design).
Animals were exposed 24 h per day with the exception of the time during which they were weighed and palpated and while the cages were cleaned. The waveguides were slightly overmoded with H = 0.525 λ. To prevent additional modes caused by field scattering by the mice, metal rip structures with a height and width of 2 cm were attached to the upper and lower plate between adjacent cages.
Sommer AM et al.
(2004):
No effects of GSM-modulated 900 MHz electromagnetic fields on survival rate and spontaneous development of lymphoma in female AKR/J mice
Bundesamt für Strahlenschutz (BfS; Federal Office for Radiation Protection), Salzgitter, Germany
Deutsches Mobilfunk Forschungsprogramm (DMF; German Mobile Phone Research Programme) at Federal Office for Radiation Protection (BfS)
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