Prion
prion
They don't quite 'reproduce', propagate would be closer to the mark. Prions are 'rogue' proteins, versions of naturally occurring proteins with a different 3D structure. They replicate in living host .
Special immunologic and serologic tests may also be used to help identify the infectious agent.
Bovine Spongiform Encephalopathy, also known as BSE, or Mad Cow Disease, is an exact example of a proteinaceous infectious particle, or Prion. It is an infectious molecule composed primarily of protien, unlike viruses. BSE attacks the brain, it is a neurodegenerative disease causing a break down of the brain tissue and spinal cord.
A virus, a viroid or a prion
They are called Prion. This is the definition I fount at wordnetweb.princeton.edu/perl/webwn: "an infectious protein particle similar to a virus but lacking nucleic acid; thought to be the agent responsible for scrapie and other degenerative diseases of the nervous system".
An infectious agent consisting of a protein is a prion. This is a mis-folded protein. It can cause several central nervous system diseases including Creutzfeldt-Jakob Disease, Fatal Familial Insomnia and Kuru in humans. Spongiform Encephalopathy in cows, mink, and cats plus Scrapie in sheep.
Prion
Prion Prion
A virus or a prion.
prion prion
prion
Prion
prion
Prion
prion You are incorrect. It is called a plasmid. A prion is a very difficult infectious self-replicating particle similar to a virus.