Oliver Wenger was responsible for the theoretical basis and practical purpose of experiments on the Tuskegee syphilis. For several years, afro-americans from poor and disadvantaged backgrounds were selected to participate in the experiments. They were artificially infected with syphilis. Patients were promised free treatment, which turned out to have life-threatening toxic methods. Another part of the patients were not informed that they are infected with syphilis, so they continued to lead a normal way of life and infect others. In the experiment, many patients died from complications of the disease and the side effects of treatment.