Frequency of micronuclei in the blood and bone marrow cells of mice exposed to ultra-wideband electromagnetic radiation.

Purpose: To investigate the extent of genetic damage in the peripheral blood and bone marrow cells of mice exposed to ultra-wideband electromagnetic radiation (UWBR). Materials and methods: CF-1 male mice were exposed to UWBR for 15min at an estimated whole-body average specific absorption rate of 37mWkg-1. Groups of untreated control and positive control mice injected with mitomycin C were also included in the study. After various treatments, half of the mice were killed at 18h, and the other half at 24h. Peripheral blood and bone marrow smears were examined to determine the extent of genotoxicity, as assessed by the presence of micronuclei (MN) in polychromatic erythrocytes (PCE). Results: The percentages of PCE and the incidence of MN per 2000 PCE in both tissues in mice killed at 18h were similar to the frequencies observed in mice terminated at 24h. There were no significant di erences in the percentage of PCE between control and the mice with or without UWBR exposure; the group mean values (standard...