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Detecting Alzheimer's Early: A New Test

Up to now, the only definitive way to diagnose Alzheimer's disease has been to study brain tissue during an autopsy, much too late to do anything about it. A new test developed by two researchers at Northwestern University could help physicians diagnose and treat Alzheimer's much earlier in the game. The bio-barcode assay test, said to be up to 1 million times more sensitive than others, detects a protein in the brain -- amyloid-beta-derived diffusable ligand (ADDL) -- associated with...