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本文作者不仅研究了大鼠长期食入不同剂量氧化氚和受到γ线长期外照射停止后的残留损伤,同时对造血系统的恢复状态、以及它在长期辐射作用停止后的残留损伤形成过程中的意义进行了观察。实验共选用Wistar种雄性大鼠1600只,分为对照和实验两大组。实验组一部分大鼠在历时3个月内,每天食入37或370MBq/kg体重氧化氚;另一部分大鼠,在上述时期内,每天接受~(137)Cs外照射,为了使该组大鼠接受的总辐射剂量与每天食入370MBq/kg体重氧化氚大鼠的总辐射剂量相等,藉铅屏蔽对它们每天接受的照射量率进行控制。在长期(3个月)辐射作用停止后1和7天,以及1、3和6～8个月,用~(60)Coγ源进行重复检验性照射,剂量为193～252mCi·kg~(-1)。用
The authors investigated not only the long-term ingestion of different doses of tritiated tritium in rats and the residual damage after a long-term external exposure to gamma rays but also the state of recovery of the hematopoietic system and its formation during residual damage after long-term radiation ceased The significance was observed. A total of 1600 Wistar male rats were selected and divided into two groups: control and experiment. Some rats in the experimental group were fed with 37 or 370MBq / kg body weight of tritium oxide daily for 3 months. The other rats received daily 137Cs external irradiation during the above period. In order to make the rats in this group The total radiation dose received was equal to the total radiation dose of 370 MBq / kg body weight tritium oxide rats per day, and their exposure to the radiation dose was controlled by lead shielding. Repeated test irradiation with ~ (60) Coγ sources at doses of 193 ~ 252 mCi · kg ~ (-1) at days 1 and 7 and 1, 3 and 6 ~ 8 months after the long- 1). use