Bloomberg | Alzheimer's Debate Revived Even as Biogen's Drug Trial Advances Bloomberg The researchers examined more than 3,600 brains from patients who died at different stages of dementia, with Alzheimer's confirmed in almost 1,400. Measuring amyloid and tau in the brains at various stages of disease progression allowed them to ... Alzheimer's: Tau, Not Amyloid, Is The Primary Driver Study: Progression of dysfunctional tau protein drives cognitive decline in ... Mayo Clinic Study of Thousands of Brains Reveals Tau as Driver of Alzheimer's ... |