@article{oai:repo.qst.go.jp:00046851,
 author = {Yamashiro, Hideaki and Abe, Yasuyuki and Fukuda, Tomokazu and Kino, Yasushi and Kawaguchi, Isao and Kuwahara, Yoshikazu and Fukumoto, Motoi and Takahashi, Shintaro and Suzuki, Masatoshi and Kobayashi, Jin and Uematsu, Emi and Tong, Bin and Yamada, Takahisa and Yoshida, Satoshi and Sato, Eimei and Shinoda, Hisashi and Sekine, Tsutomu and Isogai, Emiko and Fukumoto, Manabu and 川口 勇生 and 吉田 聡},
 issue = {2850},
 journal = {Scientific Reports (Online Only URL:http://www.nature.com/srep/index.html)},
 month = {Oct},
 note = {We aimed to investigate the effect of chronic radiation exposure associated with the Fukushima Daiichi
Nuclear Plant accident on the testis from 2 bulls. Estimated dose of internal exposure in one bull was 0.7-
1.2 mGy (134Cs) and 0.4-0.6 mGy (137Cs) and external exposure was 2.0 mGy (134Cs) and 0.8 mGy (137Cs)
(196 days). Internal dose in the other was 3.2-6.1 mGy (134Cs) and 1.8-3.4 mGy (137Cs) and external dose
was 1.3 mGy (134Cs) and 0.6 mGy (137Cs) (315 days). Sperm morphology and spermatogenesis were within
normal ranges. 134, 137Cs radioactivity was detected but Cs was not detectable in the testis by electron probe
microanalysis. Thus, adverse radiation-induced effects were not observed in bull testes following chronic
exposure to the above levels of radiation for up to 10 months. Since we could analyse a limited number of
testes, further investigation on the effects of ionizing radiation on spermatogenesis should be extended to
more animals.},
 title = {Effects of radioactive caesium on bull testes after the Fukushima nuclear plant accident},
 volume = {3},
 year = {2013}
}