Barthelemy on mass spec (IMAGE)
Caption
Nicolas Barthelemy, PhD, an instructor in neurology at Washington University School of Medicine in St. Louis, loads a sample into a mass spectrometer. Barthelemy and colleagues used mass spectrometry to discover that a form of the Alzheimer's protein tau is found at high levels in the blood of people in the earliest stages of Alzheimer's disease. The discovery could pave the way toward a blood-based test to diagnose the neurodegenerative disease before symptoms appear.
Credit
Matt Miller
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