How Stuff Works: Max Mehlman, the Arthur E. Petersilge Professor of Law, Distinguished University Professor, the director of the Law-Medicine Center and a professor of bioethics, said that scientists and doctors who inject genes into healthy people violate professional ethical codes.
![Close up photo of a health care professional administering a vaccine](https://dailymedia.case.edu/wp-content/uploads/2019/10/02163343/vaccine-feat-768x329.jpg)