In a first, bacteria found to form prions

Prions, which are known to exist in mammals and fungi, have now been identified in bacteria for the first time.

Nerve-damaging protein particles called prions have long been known to exist in mammals, but now, in a surprising discovery, investigators from the Harvard Medical School reported that they have found evidence that bacteria can also make prions.

Prions — self-propagating clumps of misfolded protein — have been identified as the cause of several rare but universally fatal neurodegenerative conditions, including bovine spongiform encephalopathy.

The experiments, publ

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