ping
HIV infection in Zimbabwe falls at last
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"At the moment, CJD and only a handful of other human diseases have clear links to prions. But it is likely that prions will turn out to be the agents of a variety of currently enigmatic diseases in which brain cells are destroyed and the nervous system deteriorates. ALZEIMER'S disease and PARKINSON'S disease are two prime candidates."
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http://science-education.nih.gov/nihHTML/ose/snapshots/multimedia/ritn/prions/prions1.html
excellent post.