caricature

The effect of single and double strand breakage and its transforming activity of in vitro plasmid DN+A was analysised by 30Kev N++、Ar+ ion beam radiation respectively.

利用 30Kev的N+ 、Ar+ 离子辐照离体质粒DNA ,分析了不同离子对DNA单双链断裂及转化活性的影响。