Evidence for person-to-person transmission of Alzheimer's pathology
from Scientific American
Prions are the misshapen proteins that replicate by inducing normal proteins to misfold and aggregate in the brain, leading to rare diseases such as mad cow and kuru. In recent years, scientists have discovered that similar processes of protein misfolding are at work in many neurodegenerative disorders, including Alzheimer's, Parkinson's and Lou Gehrig's disease.
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