Beginning of Essay
have been a mistery for scientists from the day they where discovered. act like viruses but they are not. Their structure and chemistry are unknown. They are believed to be proteins but that is yet to be completely proved. Prion stands for “proteinaceous inf ....

Middle of Essay
.... is what has given science a great deal of doubt as this would give the dogma of the beginning of live a radical turn. Prions have been in research for many years with experiments like the one done by Stanley B. Pruiser and his team of scientists at the School of Medicine of the University of California at San Francisco in which a study was carried out on mice to see if he was able to purify the scrapie agent ,another prion disease, in mice. But mice as humans took very long to develope the disease, for example Gerstmann-Straussler-Scheinker disease or fatal familial insomnia, which appear mostly on humans which have passed the age of forty and o ....