小剂量氚照射诱导的小鼠精原细胞适应性反应

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

分别给予雄性小鼠 1 .0、1 0和 2 0 c Gy3Hβ射线诱导照射 ,以及 2 0 0 c Gy6 0 Coγ线损伤照射。通过精原细胞染色体畸变分析 ,观察小剂量氚照射诱导的适应性反应。结果表明 ,1 .0、1 0和 2 0 c

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.