Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.
SCIENTIFIC PUBLICATION: HHS Asks PNAS to Pull Bioterrorism Paper
Jon Cohen
Officials at the Department of Health and Human Services have asked the Proceedings of the National Academy of Sciences (PNAS) to pull a bioterrorism-related paper that the journal planned to publish online on 30 May.