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American Chemical Society's Weekly PressPac - Oct. 10, 2007

as even a tiny amount of contaminants. Since over 50 million Pap smears are performed in the United States each year to test for HPV the leading cause of cervical cancer a fast, simple, accurate diagnosis is essential.

The new method skips the amplification step entirely, and yet can detect the presence of less than two copies of HPV per cell a level corresponding to very early infection. The technique, called single-molecule spectroscopy, could be easily integrated into the Pap smear method. It can become a good clinical screening or quantification method for viral DNA in cells, opening the door to improved screening tests for hepatitis B, herpes and other diseases.

ARTICLE #3 FOR IMMEDIATE RELEASE Single-Molecule Detection of Surface-Hybridized Human Papilloma Virus DNA for Quantitative Clinical Screening


Edward S. Yeung, Ph.D.
Iowa State University
Ames, Iowa 50011
Phone: 515-294-8062
Fax: 515-294-0266
Email :


Fresh fruits and vegetables retain antioxidants long after purchase
Journal of Agricultural and Food Chemistry

The next time you think about throwing out those aging strawberries or very ripe grapes, consider this: Belgian scientists report that fruits and vegetables do not lose any antioxidant content in the days after purchase, even as tell-tale signs of spoilage appear. In some cases, antioxidant levels actually rise.

The study will appear in the Oct. 17 issue of ACS Journal of Agric

Contact: Michael Woods
American Chemical Society

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