Sister's cancer death drove scientist's quest
24 April 2016 - 02:00
The death of his six-year-old sister when he was a boy may have been one of the saddest moments of his life, but it charted a course for Robert Gallo to become a virus hunter. The US scientist made the joint discovery in 1984 that the HI-virus causes Aids, and developed the blood test to detect it.
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