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Photo: Pinpointing SIV Ancestry Makes Top 100

December 22, 2009 2:15 AM



Tulane virologist Preston Marx's article about the antiquity of SIV, the primate virus that spawned HIV, made Discover magazine's top 100 science stories for 2010. Marx's research, showing that the virus is thousands of years older than previously thought, was chosen No. 20 on the list. (Photo by Robin Rodriguez)