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Science 14 August 1998:
Vol. 281. no. 5379, p. 941
DOI: 10.1126/science.281.5379.941
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CHEMISTRY:
Nanotubes: The Next Asbestos?

Robert F. Service

There is potentially one very big fly in the ointment of nanotubes' potential for use in molecular-scale electronic devices: toxicity. Nanotubes are rigid graphite cylinders, each just one or more nanometers wide and up to 100 micrometers long--and they resemble the shape of asbestos fibers that have been linked to cancer. Until potential health hazards have been evaluated, investigators are treating nanotubes with caution.

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