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Spit It Out

Jul 11, 2007

Popular Science looks at three different technologies that use saliva. One detects amylase, which has been linked to sleepiness; another, coming out of the Human Salivary Proteome Project, aims to replace blood tests with spit exams; and lastly, Sandia National Laboratories is developing a spit-based chip to detect early-onset gum disease.


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