@inproceedings{oai:jaxa.repo.nii.ac.jp:00013772,
 author = {澤井, 里枝 and 最上, 善広 and 馬場, 昭次 and Sawai, Satoe and Mogami, Yoshihiro and Baba, Shoji A.},
 book = {宇宙利用シンポジウム　第21回　平成16年度, Space Utilization Research: Proceedings of the Twenty-first Space Utilization Symposium},
 month = {Mar},
 note = {Paramecium has been known to proliferate faster under microgravity in space, and slower under hypergravity. Experiments using axenic culture medium have demonstrated that the hypergravity affected directly on the proliferation of Paramecium itself (Kato et al., 2003). An attempt to elucidate the mechanisms underlying the gravity-dependent changes in proliferation in terms of the cellular energetics in relation to the motile activities has been made. Paramecium would be assumed to decrease the energy expenditure for motility under microgravity and increase it under hypergravity because of the characteristics of 'gravitaxis' and 'gravikinesis'. The larger stock of energy would enhance the proliferation activity under microgravity and smaller stock would reduce the activity under hypergravity. In order to assess the feasibility of the assumption above, Paramecium tetraurelia was grown under simulated weightlessness performed by clinorotation. Under clinorotation with the rotation rate of 2.5 rpm, Paramecium proliferated to 51 percent lower saturation density than that under control normal gravity. This reduced proliferation activity was found under the clinorotation with higher rate (4.8 rpm) but appeared less pronounced with lower rotation rate (0.2 rpm)., 資料番号: AA0048095043},
 pages = {194--197},
 publisher = {宇宙航空研究開発機構宇宙科学研究本部, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)},
 title = {Effect of clinorotation on the proliferation of Paramecium tetraurelia},
 year = {2005}
}