Detection of Cancer by Dogs
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Scientific tests in the United Kingdom and the United States have shown that dogs can detect cancers because of their intensely acute sense of smell (Finch). Dogs have proved extremely accurate at detecting cancerous tissues from among those mixed with normal tissues. In May of 2002, the BBC news reported that researchers at Cambridge University in England had applied for funding to test the theory that dogÆs could be used to provide an early warning system for cancer because of their highly developed sense of smell (Onion; Dogs). The hope is to train dogs to detect cancer in urine samples for screening tests in such conditions as prostate cancer. Current tests for prostate cancer are not very exact, and a dogÆs sense of smell can detect changes in odors. DogÆs can detect the changes in a patientÆs hormone system and temperature prior to an epilepsy seizure and warn them using their acute sense of smell, and the same mechanism may work for detecting cancer. It is not known what the dogs will actually smell in someone with cancer, only that something in the urine smells different. A report in the Lancet in 1989 described how a Border Collie-Doberman mix dog discovered a cancerous skin tumor on her ownerÆs leg, but it is not known how the dog was able to do this (Dog; Schulte). The dog repeatedly sniffed a mole on her thigh while disregarding others, and even tried to bite it off when she wore shorts. The dogÆs constant attention to the mole persuaded her to seek m
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Approximate Word count = 995
Approximate Pages = 4 (250 words per page)
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