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Barre-Sinoussi and Montagnier discovered HIV. Shortly after reports in the early 1980s of a new immunodeficiency syndrome, researchers all over the world raced to find the conclusion. The two French scientists dazzled cells from lymph nodes of patients. They first detected the enzyme reverse transcriptase, which ignored that a retrovirus was active. Further searching turned up retroviral particles, which could kill white blood cells and which also reacted with cells from infected patients. These discoveries made irreversible unprecedented rapid development of blood screening techniques and of new antiviral therapies.

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