Interest in the field of atherosclerosis research has broadened in recent years. However the main focus remains on the physiopathology of the arterial wall and on its interaction with blood constituents. The purpose of this NATO Advanced Study Institute on "Factors in Formation and Regression of the Atherosclerotic Plaque" was to discuss the following points: a) The physiopathology of the arterial wall; b) Animal models; c) Methods of studying the progression and regression of atherosclerotic lesions quantitatively; d) The role of lipoproteins, platelets, smoke, alcohol, etc. in the formation...