the control group were not given treatment for syphilis, and many died Why

Ethical Case Study An example of unethical treatment of participants was the Tuskegee syphilis experiment, who believed they were being treated for “bad blood” “Bad blood”: A term used to describe problems like anemia, fatigue, and syphilis Those in the control group were not given treatment for syphilis, and many died Why would this research study not fall under the present ethical and legal restraint? Please support your answer with scholarly articles.