Year in review: Alzheimer’s protein behaves like a prion
Amyloid-beta might spread in rare cases
![stained brain tissue](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/12/122615_12_feat.jpg?fit=860%2C460&ssl=1)
BUILDUP Amyloid-beta (brown) accumulated in the front of the brain in a person who received injections of cadaver-derived growth hormone as a child, suggesting that the injections were contaminated with A-beta, researchers reported this year.
Z. JAUNMUKTANE ET AL/NATURE 2015