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Adaptive Response of Spermatogonium in Mice Exposed to Tritium at Low Doses

Guo Yuefeng Zhou Jinyuan Wang Mingming (China Institute for Radiation Protection,Taiyuan,030006)  
Male mice were exposed to 3H β rays at 1.0,10 or 20 cGy and to 60 Co γ rays at 200 cGy.Adaptive response of spermatogonium in the mice exposed to 3H β rays at low dose was observed by using chromosome aberration analysis.Results show that exposure to 3H β rays at 1.0,10 and 20 cGy can mitigate chromosome damage among the mice exposed to subsequent exposure at greater dose.
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