@article{oai:repo.qst.go.jp:00043194,
 author = {Sasaki, Masao and Hayata, Isamu and Kamada, Nanao and Kodama, Yoshiaki and Kodama, Seiji and 佐々木 正夫 and 早田 勇 and 児玉 喜明 and 児玉 靖司},
 issue = {Suppl.},
 journal = {Journal of Radiation Research},
 month = {Sep},
 note = {Chromosome aberrations were studied in peripheral blood lymphocytes of 43 persons who were exposed to low-level radiation of mixed neutrons and gamma-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 60Co gamma-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.},
 pages = {S107--S116},
 title = {Chromosome Aberration Analysis in Persons Exposed to Low-level Radiation from the JCO Criticality Accident in Tokai-mura},
 volume = {42},
 year = {2001}
}