A beacon illuminates a key Alzheimer’s protein

Researchers can now see tau, which accompanies amyloid in diseased brains

BEACON OF TAU  In a PET scan, the protein tau is illuminated (left) in the hippocampus (arrowhead) of a brain of a person suspected to have Alzheimer's disease. A scan that reveals amyloid (right) shows a slightly different pattern.

M. Maruyama et al/Neuron 2013

Deep within the living brain, a newly created beacon can illuminate hidden signs of Alzheimer’s disease.