Robert F. Furchgott dies at 92; scientist won Nobel Prize

The research of Furchgott and two co-winners on the function of nitric oxide in the body was important to cardiovascular medicine -- and helped pave the way for Viagra. Robert F. Furchgott, one of three American scientists awarded the 1998 Nobel Prize for Physiology or Medicine for their discovery that nitric oxide transmits signals within the human body, died May 19 in Seattle. He was 92.

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