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A 48-year-old member asked:

How many known "species" of prions are there?

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Dr. Jeffrey Satinover
Psychiatry 39 years experience
Tough question: There are about two dozen known prion diseases caused by more or less distinct prions. Yet the underlying prions do fal, into two large classes. Then there are normal prion type proteins found throughout the body and in the brain. The truth is that this is afield of such new and active research that a solid taxonomy has not yet been developed (so far as i know).

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Last updated Dec 10, 2013

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