Researchers are exploring whether these ubiquitous fluorinated molecules might worsen infections or hamper vaccine effectiveness.
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Contributed by C. Vance Haynes, Jr., January 23, 2008 (received for review April 27, 2007)
Contributed by C. Vance Haynes, Jr., January 23, 2008 (received for review April 27, 2007)
Author contributions: C.V.H. designed research, performed research, analyzed data, and wrote the paper.
The author declares no conflict of interest.
This article contains supporting information online at www.pnas.org/cgi/content/full/0800560105/DC1.
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