Chromosome Aberration Analysis in Persons Exposed to Low-level Radiation from the JCO Criticality Accident in Tokai-mura

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概要

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• Chromosome aberrations were studied in peripheral blood lymphocytes of 43 persons who were exposed to low-level radiation of mixed neutrons and γ-rays resulting from the JCO criticality accident. When the age-adjusted frequencies of dicentric and ring chromosomes were compared with the dose calibration curve established in vitro for ^<60>Co γ-rays as a reference radiation, a significant correlation was observed between the chromosomally estimated doses and the documented doses evaluated by physical means. The regression coefficient of the chromosomal doses against the documented doses, 1.47 ± 0.33, indicates that the relative biological effectiveness of fission neutrons at low doses is considerably higher than that currently adopted in the radiation protection standard.

• 日本放射線影響学会の論文

著者

• Kodama Seiji

  School Of Pharmaceutical Sciences Nagasaki University

• HAYATA Isamu

  National Institute of Radiological Sciences

• SASAKI Masao

  Radiation Biology Center, Kyoto University

• Kamada Nanao

  Institute Of Radiation Biology And Medicine Hiroshima University

• KODAMA YOSHIAKI

  Radiation Effects Research Foundation

• Sasaki Masao

  Radiation Biology Center Kyoto University

• Sasaki Masao

  Radiat. Biol. Center Kyoto Univ.

• Hayata Isamu

  National Institute of Radiological Science

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