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Ready for their close-ups: investigating single molecules.

Profiles provide insights into the lives, backgrounds, career paths, and futures of scientists who serve as Experts on ACS Chemical Biology's online Ask the Expert feature. Dr. Ha will begin answering your questions in mid-January, 2007. Readers are encouraged to submit questions to the Experts at www.acschemicalbiology.org. The editors will post the most interesting exchanges on the web site.