Dogs help sniff out ovarian cancer in new study

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Cancer Sniffing Dogs
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Cancer Sniffing Dogs
George Preti poses for a portrait at the Monell Chemical Senses Center, Thursday, June 20, 2013, in Philadelphia. Researchers in Philadelphia have begun an ovarian cancer detection study that relies on dogs’ keen sense of smell. Scientists at the Monell Chemical Senses Center want to combine old-fashioned olfactory work with modern technology to help catch the disease in its earliest stages. (AP Photo/Matt Rourke)