Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.
The National Institutes of Health (NIH) in Bethesda, Maryland, has relaxed ethics rules issued 6 months ago that many feared would drive talent away from the agency. The revised rules seem to please both NIH scientists and outside critics.