Fifty years after IL-2 discovery, researchers reflect on how it has transformed medicine

A discovery made 50 years ago helped establish the field of human retrovirology, advance understanding of the human immune system and contribute to a revolution in cancer treatment. A new perspective in Science examines that history, beginning with the 1976 discovery by Robert C. Gallo, MD, and his colleagues of a human T-cell growth factor later named interleukin-2 (IL-2).

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