Associated Press
This undated photo provided by the American Cancer Society shows Dr. George Papanicolaou, inventor of Pap test, foreground, and his wife, who was also his research partner, in their lab. In the late 1940s, the American Cancer Society advocated wide adoption of the Pap test, which has resulted in a 70 percent decrease in uterine and cervical cancer. (AP Photo/American Cancer Society)

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