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A New Blood Test Approach can Assess Levels of Amyloid-? in the Brain

Researchers have developed a blood test that correlates well with levels of amyloid-? in the brain, offering an opportunity to reduce the cost of assessing potential therapies to treat Alzheimer's disease. Currently the only reliable methods are invasive or expensive, requiring access to cerebrospinal fluid or the use of scanning technologies. This work might be considered in the broader context of a range of studies linking amyloid-? in blood vessels and bloodstream with amyloid-? in the brain; it is thought that the relationship between amyloid-? inside and outside the brain may be a two-way street, a form of equilibrium.
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