2. **The Tuskegee Syphilis Study** — From 1932 to 1972, the…

2. **The Tuskegee Syphilis Study** — From 1932 to 1972, the U.S. Public Health Service conducted an unethical study on the progression of untreated syphilis in African-American men. The men were misled about the purpose of the study and were not provided with treatment even after penicillin was discovered as a cure.