sheath

Their findings show that the immune system begins attacking the brain's protective myelin sheath -- the fatty covering that insulates nerve fibers -- much earlier than scientists once believed.

In MS, the immune system mistakenly attacks the myelin sheath, a protective layer that insulates nerve fibers.

"He was subsequently stopped and a small sickle, a large dagger which was in a sheath on a belt, and a peeling knife, were seized," the force said.

Frankly, Aidan’s behavior is far more concerning than Wyatt’s, a flag so big and red that Carrie could make a stunning sheath dress out of it.

Investigators linked Kohberger to the murder through cell phone data, surveillance video, and DNA on a knife sheath at the crime scene.