Effect of Tritiated Water on Growth of A Radiation-Sensitive Strain of Eseherichia coli, NG30

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概要

• 論文の詳細を見る

• In the presence of tritiated water (HTO), Escherichia coil NG30 was grown in sealed test tubes containing synthetic medium (M9-0.4% glucose-0.005% arginine), and cell growth was monitored by measuring medium turbidity. Catalase (60 μg/ml) was added to the medium to reduce HTO associated accumulation of H_2O_2. A positive correlation between increasing concentration of HTO in the medium and the growth suppression was seen. A similar trend was observed when cells were grown under continuous irradiation of ^<60>Co gamma-rays. The RBE of HTO beta-rays relative to gamma-rays was calculated from the accumulated doses to the cultures. It was found to be 1.7 when the growth was inhibited to 60% of the control, and increased with decreasing dose.

• 日本放射線影響学会の論文

著者

• Higo K

  National Inst. Agrobiological Resources Ibaraki Jpn

• Yamamoto Osamu

  Research Institute For Nuclear Medicine And Biology Hiroshima University

• HIGO KEN-ICHI

  Research Institute for Nuclear Medicine and Biology, Hiroshima University

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