prions

Scientists Find Evidence That Sheep Can Cause Mad Cow Disease

Scientists Find Evidence That Sheep Can Cause Mad Cow Disease

Researchers think they’ve solved one of the most enduring mysteries of a strange, always-fatal disease that turns both people and cows mad. In experiments with genetically manipulated mice, they found direct evidence that mad cow disease—a condition caused by a zombie-like, brain-destroying protein called a prion—can be caused by contact…

Brain-Destroying Prions Also Spread Through Victims’ Eyes

Brain-Destroying Prions Also Spread Through Victims’ Eyes

One of the strangest things that can sicken us — a rogue misfolded protein that destroys the brain, known as a prion — is even scarier than we knew. Researchers were able to find the prions responsible for sporadic Creutzfeldt-Jakob disease (sCJD), the most common prion disease in people, seeded…