Definition of prion
- A prion is a protein of unknown function that resides on the surface of brain cells.
- —Sidney Perkowitz
- Abnormal proteins, known as prions, may trigger mad-cow disease simply by coming into contact with healthy proteins in the brain.
- … the infectious prion conformation replicates itself in a host by catching the 'benign' host prion protein and forcing it into the infectious conformation.
- —Roland Riek
medical Definition of prion
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