I. The Arterial Wall in the Pathogenesis of Atherosclerosis.- Workshop: The Composition of Early Lesions.- The Lesion.- Metabolism of the Arterial Wall.- Biophysical Factors in Vascular Structure and Caliber.- Contraction of Endothelial Cells as a Key Mechanism in Atherogenesis and Treatment of Atherosclerosis with Endothelial Cell Relaxants.- II. Lipoproteins and Proteins of the Arterial Wall.- Uptake of Intact Plasma Lipoproteins into the Arterial Wall of the Rabbit.- Beta-Lipoprotein Entry into the Arterial Wall and its Prevention.- Identification of Lipoproteins Involved in Human Atherosclerosis.- Quantitative Interrelationships Between Plasma Constituents and Normal and Atherosclerotic Human Intimai Tissue.- III. Lipids of the Arterial Wall.- Lipid Metabolic Pool in Subcellular Fractions of Rabbit and Human Atherosclerotic Lesions.- Glucose and Lipid Metabolism in the Human Arteriosclerotic Aorta.- Cholesterol Transfer in Vitro Between the Rabbit Aorta and Serum Lipoproteins.- Arterial Lipid Metabolism in Diabetic Animal Models with Reduced or Elevated Plasma Insulin Levels.- Lipid Metabolism in Perfused Human Coronary Arteries and Saphenous Veins.- IV. Enzymes of the Arterial Wall.- Workshop: Arterial Wall Enzymes.- A Comparison of the Rates of Lipolysis and Lipogenesis in the Rat Aorta.- Properties and Positional Specificity of Lipases in the Human Aorta.- The Influence of Atherosclerosis on Cholesterol Esterifying Activity of Rabbit and Monkey Aorta.- Aortic Uptake of Chylomicron Triglyceride in Vivo and Aortic Lipoprotein Triglyceride Lipase in Rat.- V. Metabolic Functions of the Arterial Cell.- Workshop: Metabolism and Function of Arterial Cells in Culture.- Cell Proliferation and Ultrastructural Changes in Regressing Atheroslerotic Lesions After Reduction of Serum Cholesterol.- Glucosamineglycans in Cell Membranes and the Extracellular Compartment of the Arterial Wall.- Increased Mitotic Activity in Primary Cultures of Aortic Medial Smooth muscle Cells Aflów