The anecdotes abound about people sharing how their dog sniffed and pawed at them until the person checked out what seemed to be a problem - and found that they had cancer.
Now a new study is suggesting that there is something to the stories. Preliminary tests have shown that dogs indeed do detect a certain scent and can pinpoint molecules contained in tubes that sick patients have breathed into.
Will dogs be part of a new cancer detection force and a better tool to catching often "invisible" cancers in earlier, more treatable stages?
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