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Published August 09, 2013, 12:00 AM

Cancer Sniffing Dogs


In this Thursday, Aug. 1, 2013 photo, Jonathan Ball practices with Tsunami in the first round of training for a study that will eventually involve detecting cancerous tissue at Penn Vet Working Dog Center in Philadelphia. (AP Photo/Matt Rourke)
Read the article: Dogs help sniff out ovarian cancer in Pennsylvania study