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Sprague Dawley rats were exposed to 1800 MHz (GSM) RF for 2 hrs/day, 5 days/wk, for 9 weeks at SARs of 1, 2, and 4 W/kg after an initial dose of DMBA to initiate mammary tumors. Examination of micronuclei formation in peripheral blood or bone marrow lymphocytes is currently ongoing. |