Judged: two independent readers; copy check clear.
prion
prion A prion is a transmissible abnormal form of a normal host protein produced by a structural change in that protein.
A prion is a transmissible abnormal form of a normal host protein produced by a structural change in that protein. When it builds up in the central nervous system, it can cause fatal neurodegenerative disease classified as a transmissible spongiform encephalopathy.