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Concentrations of 137Cs radiocaesium in the organs and tissues of low-dose-exposed wild Japanese monkeys

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BMC RESEARCH NOTES
卷 13, 期 1, 页码 -

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SPRINGERNATURE
DOI: 10.1186/s13104-020-04972-z

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Japanese monkeys; Fukushima Daiichi Nuclear disaster; Caesium; Radioactive contamination

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  1. Science Research Promotion Fund from the Promotion and Mutual Aid Corporation for Private Schools of Japan

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Objectives Following the massive earthquake that struck eastern Japan on March 11, 2011, a large amount of radioactive material was released into the environment from the damaged reactor of the Fukushima Daiichi Nuclear Power Plant (FDNPP). After the FDNPP accident, radiocaesium was first detected in muscle samples from wild Japanese monkeys exposed to radioactive materials, and haematologic effects, changes in head size, and delayed body weight gain were also reported, but little is known about the distribution of Cs-137 in the organs and tissues of wild Japanese monkeys. Results We detected the Cs-137 in various organ and tissue samples of 10 wild Japanese monkeys inhabiting the forested areas of Fukushima City that were captured between July and August 2012. Among muscle, brain, heart, kidney, liver, lung, and spleen, muscle exhibited the highest and the brain the lowest Cs-137 concentration. The concentration (mean +/- SD) of Cs-137 in muscle, brain, heart, kidney, liver, lung, and spleen was 77 +/- 66, 26 +/- 22, 41 +/- 35, 49 +/- 41, 41 +/- 38, 53 +/- 41, and 53 +/- 51 Bq/kg, respectively. These results can help us understand the biological effects of long-term internal radiation exposure in non-human primates.

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