Researchers have developed a test that might be useful in detecting lung cancer in its early stages. It only requires a sample of saliva. This is all tumor, this is all lung cancer here. It's usually too late.
Lung cancer is a fast-spreading and lethal disease.
But what if you could find signs of lung cancer early in the saliva. That's the kind of test these researchers think they've found. The test they hope will offer an early warning for current and former smokers. I think of this almost like a canary in a coal mine. It's a sentinel, it's a signal that there's something changing, that there's something going wrong.