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Alzheimer’s Drug Failure Leaves Scientists Seeking New Direction

For years, drugmakers have tried targeting a brain compound called beta amyloid. Not one of those attempts has worked.

A woman, suffering from Alzheimer's desease, walks in a corridor on March 18, 2011 in a retirement house in Angervilliers, eastern France. AFP PHOTO / SEBASTIEN BOZON (Photo credit should read SEBASTIEN BOZON/AFP/Getty Images)
A woman, suffering from Alzheimer's desease, walks in a corridor on March 18, 2011 in a retirement house in Angervilliers, eastern France. AFP PHOTO / SEBASTIEN BOZON (Photo credit should read SEBASTIEN BOZON/AFP/Getty Images)Photographer: AFP/AFP
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Drugmakers have tried again and again to treat Alzheimer’s disease by targeting a compound in the brain known as beta amyloid.