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Scientific American

April 1, 1990

1 min read

Tone of Relief

Ultrasound speeds the release of drugs from medical implants

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John Rennie is a former editor in chief of Scientific American.

More by John Rennie

This article was originally published with the title “Tone of Relief” in Scientific American Magazine Vol. 262 No. 4 (April 1990), p. 30
doi:10.1038/scientificamerican0490-30a

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