image: This is a scanning electron micrograph of strain GFAJ-1 under a condition discussed in the text: +As/-P. Please see figure 1 in the manuscript for more information. This image relates to an article that appeared in the Dec. 2, 2010, issue of Science Express, published by AAAS. The study, by Dr. Felisa Wolfe-Simon at NASA Astrobiology Institute in Menlo Park, Calif., and colleagues was titled, "A Bacterium That Can Grow by Using Arsenic Instead of Phosphorus." view more
Credit: Image courtesy of <i>Science</i>/AAAS