Retraction
The Research Article “A bacterium that can grow by using arsenic instead of phosphorus” by F. Wolfe-Simon et al. (1) has been the subject of discussion and critique since its online publication in 2010. In 2011, Science published the print version of the paper accompanied by eight Technical Comments (2–9) and a Technical Response from Wolfe-Simon et al. (10), along with an Editor’s Note (11). In 2012, Science published two papers that failed to reproduce the finding that the GFAJ-1 bacterium can grow using arsenic instead of phosphorus (12, 13).
