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Science & Technology

June Ward (right) — pictured with her sisters Susie Gilliam (center) and Karen Douthitt (left) — carries a rare gene mutation that virtually guarantees she will get Alzheimer's in the next few years. She is part of a network of more than 200 families with these kinds of gene mutations who have volunteered as research subjects over the past two decades.
Juan Diego Reyes for NPR
Families with rare gene mutations that cause Alzheimer's in middle age are giving scientists a unique window on the disease, and a quick way to test potential treatments.
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