A special seminar on Prospective Research and Regulatory Issues Involving Dioxins and Related Compounds was held at the Eighth International Symposium on Chlorinated Dioxins and Related Compounds (Dioxin '88) in Umea, Sweden, on August 25, 1988. The session was a follow-up activity sponsored by the NATO/CCMS Pilot Study on International Information Exchange on Dioxin and Related Compounds. The session was intended to present information on future aspects of dioxin research and regulation in 10 nations as a means to promote cooperative efforts in the future. The objectives included the presentation of information so that research and regulatory planners and managers are able to identify knowledge voids and areas of duplication in order to make better informed decisions concerning future activities. The session included presentations from: Canada, Denmark, the Federal Republic of Germany, Italy, the Netherlands, Norway, Sweden, Switzerland, the United Kingdom, and the United States.