Discusses the ethical issues that arise when research that is subject to U.S. reg'n. is sponsored or conducted in developing countries. The commission limited its focus to the conduct of clinical trials (CT) that can lead to the development of effective new treatments. The commission noted the need for such CT to be responsive to the health needs of the host country. Chapters: ethical issues in internat. research -- setting the stage; ethical consid. in the design and conduct of internat. CT; voluntary informed consent; when research is concluded -- access to the benefits of research by participants and countries; and ensuring the protection of research participants in internat. clinical trials.