The diversity and significance of recent research on the kallikrein-kinin system provided the impetus for this international conference, the purpose of which was the assessment of our knowledge and the development of a base from which to plan future research. Through the generous support of the Fogarty International Center and of the National Heart, Lung, and Blood Institute, the Organizing Committee was able to bring together authorities in virtually every aspect of kinin research. The kallikrein-kinin field was divided into three major areas: A) Characterization and assays of components of the kallikrein-kinin systems; B) Interacting systems: Fibrinolysis, complement, coagulation, and prostaglandins; and C) Physiological, pathological, and clinical significance. Invited experts were instructed to present concise critical reviews along with any new data. Time was a)so provided for discussants to present relevant comments and data. Selected discussions accompany the keynote reports, and these comprise the short chapters.