In the tuskegee syphilis experiments, what information did researchers keep from their subjects about their illnesses? a. they were told they had a rare form of syphilis. b. they were not treated for or told they had cancer. c. they were told they had a sexually transmitted infection. d. they were not treated for or told they had syphilis.

D) They were not treated for or told they had syphilis

The infamous Tuskegee experiments, which were conducted over a period of roughly 40 years from the 1930s to the 1970s, involved the observation of African American men and women with syphilis, without informing them of their condition or treating it. This is especially shocking due to the fact that a veritable cure, penicillin, was developed for syphilis in the 1940s. 

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