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Peter H. Duesberg, 89, Renowned Biologist Turned H.I.V. Denialist, Dies

His pioneering work on the origins of cancer was later overshadowed by his contrarian views, notably his rejection of the established theory that H.I.V. causes AIDS.

ยฉ Roger Ressmeyer/Corbis — VCG, via Getty Images

Peter H. Duesberg in 1985, holding a tray of petri dishes containing cultured cancer cells. In the late 1960s, he discovered the first known cancer-causing gene, or oncogene.
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