Drexler donated ovarian cancer tissue for the study. / AP Photo/Matt Rourke Two of the three finalists for the ovarian cancer training were chosen because they naturally sat down when they found the smell they were seeking. The third dog, a Labrador, tended to bark when he found his target. However, he worked best when he was in an environment that had fewer distractions, which was perfect for the laboratory and not for other tasks like bomb sniffing. The cancer training has only been going on for a week, but Otto is surprised at how quickly the pupils are picking up their skills. Right now, the dogs are being trained to sniff out ovarian cancer in tissue samples.
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