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Biological effects of high‐frequency electromagnetic fields on Salmonella typhimurium and Drosophila melanogaster
Author(s) -
Hamnerius Yngve,
Rasmuson Åsa,
Rasmuson Bertil
Publication year - 1985
Publication title -
bioelectromagnetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.435
H-Index - 81
eISSN - 1521-186X
pISSN - 0197-8462
DOI - 10.1002/bem.2250060407
Subject(s) - microwave , drosophila melanogaster , electromagnetic field , electromagnetic radiation , irradiation , mutation frequency , nutrient agar , extremely low frequency , radiation , microwave irradiation , materials science , nuclear magnetic resonance , biology , agar , bacteria , optics , physics , mutation , genetics , gene , quantum mechanics , nuclear physics
Salmonella typhimurium and Drosophila melanogaster were exposed to continuous wave (CW) 2.45‐GHz electromagnetic radiation, pulsed 3.10‐GHz electromagnetic radiation, CW 27.12‐MHz magnetic fields, or CW 27.12‐MHz electric fields (only Drosophila ). The temperatures of the treated sample and the nonexposed control sample were kept constant. The temperature difference between exposed and control samples was less than ± 0.3°C. Ames' assays were made on bacteria that had been exposed to microwaves (SAR 60–130 W/kg) or RF fields (SAR up to 20 W/kg) when growing exponentially in nutrient broth. Survival and number of induced revertants to histidine prototrophy were determined by common plating techniques on rich and minimal agar plates. The Drosophila test consisted of a sensitive somatic system where the mutagenicity was measured by means of mutations in a gene‐controlling eye pigmentation. In none of these test systems did microwave or radiofrequency fields induce an elevated mutation frequency. However, a significantly higher concentration of cells was found in the bacterial cultures exposed to the 27‐MHz magnetic field or 2.45‐GHz CW and 3.10‐GHz pulsed microwave radiation.