In this 1950's photo released by the National Archives, men included in a syphilis study pose for a photo in Tuskegee, Ala. For 40 years starting in 1932, medical workers in the segregated South withheld treatment for unsuspecting men infected with a sexually transmitted disease simply so doctors could track the ravages of the horrid illness and dissect their bodies afterward. It was finally exposed in 1972. (National Archives via AP)
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