New LASER can detect certain cancers in a patients breath?

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Apparently it is true.  Using molecular markers by looking at wavelengths that are reflected can be used to fingerprint compounds.  This similar technique is used to determine the makeup of a distant star or planet.  Impressive

Photograph of Ioachim Pupeza and a colleague with the new laser system

http://physicsworld.com/cws/article/news/2015/sep/30/new-laser-could-spot-signs-of-cancer-in-exhaled-breath

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