David Duprey/ The Associated Press
FILE – A closeup of a human brain affected by Alzheimer’s disease, is displayed at the Museum of Neuroanatomy at the University at Buffalo in Buffalo, N.Y., on Oct. 7, 2003. According to findings published Wednesday, Feb. 21, 2024 in the New England Journal of Medicine, Alzheimer’s quietly ravages the brain long before symptoms appear and now scientists are getting a closer look at the domino-like sequence of those changes _ a potential window to one day intervene. 
"When you have 90% accuracy," Ilene Rosenthal said, "that's very impressive."
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