Radiation tolerance in the tardigrade Milnesium tardigradum

  title={Radiation tolerance in the tardigrade Milnesium tardigradum},
  author={Daiki D. Horikawa and Tetsuya Sakashita and Chihiro Katagiri and Masahiko Watanabe and Takahiro Kikawada and Yuichi Nakahara and Nobuyuki Hamada and Seiichi Wada and Tomoo Funayama and Seigo Higashi and Yasuhiko Kobayashi and Takashi Okuda and Mikinori Kuwabara},
  journal={International Journal of Radiation Biology},
  pages={843 - 848}
Purpose: Tardigrades are known to survive high doses of ionizing radiation. However, there have been no reports about radiation effects in tardigrades under culture conditions. In this study, we investigated tolerance of the tardigrade, Milnesium tardigradum, against gamma-rays and heavy ions by determining short-term or long-term survival, and reproductive ability after irradiation. Materials and methods: Hydrated and anhydrobiotic animals were exposed to gamma-rays (1000 – 7000 Gy) or heavy… 
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