%0 Journal Article
%T Determination of DNA single-strand breaks by low-energy heavy ion and analysis of dose-effect curves<br>
%A Yanhua Du
%A Shenghai Huang
%A Zheng Tan
%A Yingzhi Lin
%A Guanying Qiu
%A <br>
%J 科学通报(英文版)
%D 1999
%I 
%X Calf thymus DNA was exposed to low-energy heavy ions (N+) and60Co-γ-rays, and the dose-effect on DNA single-strand breaks (SSB) has been investigated. The results indicate that the dose-effect curve by N+ irradiation is different from that of conventional ionizing radiation. While the curve from γ-irradiation follows exponential type, the effect curve produced by N+ ion is of “saddle type”. The yield of DNASSB per dose unit per DNA unit remained at a certain level under different doses of γ-rays. In contrast, the DNASSB at low dosage region of N+ showed an obvious peak before it decreased rapidly to a lower level.
%K ion implantation
%K γ
%K -rays
%K “
%K saddle types”
%K curve
%K DNA single-strand breaks
%K curve fitting<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=01BA20E8BA813E1908F3698710BBFEFEE816345F465FEBA5&cid=96E6E851B5104576C2DD9FC1FBCB69EF&jid=DD6615BC9D2CFCE0B6F945E8D5314523&aid=F0AF1246A3DF23590B17F22BBD0CBF95&yid=B914830F5B1D1078&vid=1AE5323881A5ECDC&iid=5D311CA918CA9A03&sid=FD6137FFCE59D193&eid=FD6137FFCE59D193&journal_id=1001-6538&journal_name=科学通报(英文版)&referenced_num=0&reference_num=14