Biomedical Sciences Research Center Alexander Fleming, 16672 Vari, Greece.
Science. 2011 Jun 3;332(6034):1149; author reply 1149. doi: 10.1126/science.1201381. Epub 2011 May 27.
Wolfe-Simon et al. (Research Articles, 3 June 2011, p. 1163; published online 2 December 2010) reported that a naturally occurring bacterium, strain GFAJ-1, can substitute arsenic for phosphorus in its biomolecules. However, straightforward experiments to support this claim, including density gradient centrifugation of DNA assumed to contain arsenic, were either not performed or not presented. As a result, the authors' conclusions remain uncertain.
沃尔夫-西蒙等人（研究文章，2011 年 6 月 3 日，第 1163 页；网上公布 2010 年 12 月 2 日）报告称，一种自然存在的细菌，GFAJ-1 菌株，可以在其生物分子中用砷替代磷。然而，支持这一说法的简单直接的实验，包括对含有砷的 DNA 的密度梯度离心，要么没有进行，要么没有呈现。因此，作者的结论仍然不确定。
