Tissue sample suggests HIV has been infecting humans for a century
48-year-old lymph node biopsy reveals the history of the deadly virus.
A biopsy taken from an African woman nearly 50 years ago contains traces of the HIV genome, researchers have found. Analysis of sequences from the newly discovered sample suggests that the virus has been plaguing humans for almost a century.
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Wednesday, October 1, 2008
An old bad boy
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