Imaida K, Kuzutani K, Wang J, Fujiwara O, et al (2001).
Ten-week-old mice were given a single application of 7,12-dimethylbenz(a)anthracene (DMBA) on shaved skin on their back. DMBA is a known carcinogen. One week later the mice were divided into four groups: forty receiving electromagnetic near fields exposure (DMBA-EMF); forty had sham-exposure (DMBA-sham); thirty also received TPA (another carcinogen) as a positive control (DMBA-TPA); and thirty had no additional treatment (DMBA-control). The EMF was from a 1.5 GHz (TDMA) signal. Local skin peak SAR was 2 W/kg, and the whole body average SAR was 0.084 W/kg. The EMF was given 90 minutes a day, 5 days a week, for 19 weeks. The animals were then killed and examined for skin tumours. The incidences of skin tumours were - DMBA-EMF 0%, DMBA-sham 0%, DMBA-TPA 96.6%, and DMBA-control 3.3%. Similarly, there was no difference in the incidences of leukaemia or lymphoma between the four groups, or in the levels of plasma melatonin, cortisol, and ACTH.
authors concluded that 1.5 GHz EMF exposure did
not produce DMBA-initiated mouse skin carcinogenesis
under the present experimental conditions