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Science 3 December 2004:
Vol. 306. no. 5702, p. 1665
DOI: 10.1126/science.306.5702.1665a
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News of the Week

TOXICOLOGY:
Factory Study Shows Low Levels of Benzene Reduce Blood Cell Counts

Erik Stokstad

A tightly controlled study, reported on page 1774 of this issue of Science, shows that workers who inhaled less than 1 part per million of benzene--an exposure considered safe under U.S. occupational guidelines--had fewer white blood cells than did unexposed workers.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)