作者单位:Saga Univ, Analyt Res Ctr Expt Sci, Saga 8498501, Japan[1]Tohoku Univ, Inst Dev Aging & Canc, Aoba Ku, Sendai, Miyagi 9808575, Japan[2]Hiroshima Univ, Grad Sch Sci, Dept Math & Life Sci, Higashihiroshima 7398526, Japan[3]Natl Inst Radiobiol Sci, Res Ctr Charged Particle Therapy, Heavy Ion Radiobiol Res Grp, Inage Ku, Chiba 2638555, Japan[4]