Article
Mutation induction in cultured human cells after low-dose and low-dose-rate gamma-ray irradiation: detection by LOH analysis.
Journal of radiation research - 1 Jan 2007
Umebayashi Yukihiro, Honma Masamitsu, Suzuki Masao, Suzuki Hiromi, Shimazu Toru, Ishioka Noriaki, Iwaki Masaya, Yatagai Fumio
Abstract excerpt
To study the genetic effects of low-doses and low-dose-rate ionizing radiation (IR), human lymphoblastoid TK6 cells were exposed to 30 mGy of gamma-rays at a dose-rate of 1.2 mGy/hr. The frequency of early mutations (EMs) in the thymidine kinase (TK) gene locus was determined to be 1.7 x 10(-6), or 1.9-fold higher than the level seen in unirradated controls. These mutations were analyzed with a loss of...
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