In The Immortal Life of Henrietta Lacks, Rebecca Skloot described the Tuskegee Syphillis study. "It started in the thirties and researchers wanted to study how syphillis killed, from infection to death. They recruited hundreds of African American men and watched them die slow painful deaths, even after they realized penicillin could cure them. The research subjects did not ask questions, they were poor and uneducated." This paragraph includes examples of: Health inequity Health inequality Social determinants of health and health inequity Social determinants of health Population health.